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Siddique A, Nawaz H, Razzaque S, Tabasum A, Gong H, Razzaq H, Umar M. PVDF-Based Piezo-Catalytic Membranes-A Net-Zero Emission Approach towards Textile Wastewater Purification. Polymers (Basel) 2024; 16:699. [PMID: 38475382 DOI: 10.3390/polym16050699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/05/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Among the various water purification techniques, advancements in membrane technology, with better fabrication and analysis, are receiving the most research attention. The piezo-catalytic degradation of water pollutants is an emerging area of research in water purification technology. This review article focuses on piezoelectric polyvinylidene difluoride (PVDF) polymer-based membranes and their nanocomposites for textile wastewater remediation. At the beginning of this article, the classification of piezoelectric materials is discussed. Among the various membrane-forming polymers, PVDF is a piezoelectric polymer discussed in detail due to its exceptional piezoelectric properties. Polyvinylidene difluoride can show excellent piezoelectric properties in the beta phase. Therefore, various methods of β-phase enhancement within the PVDF polymer and various factors that have a critical impact on its piezo-catalytic activity are briefly explained. This review article also highlights the major aspects of piezoelectric membranes in the context of dye degradation and a net-zero approach. The β-phase of the PVDF piezoelectric material generates an electron-hole pair through external vibrations. The possibility of piezo-catalytic dye degradation via mechanical vibrations and the subsequent capture of the resulting CO2 and H2 gases open up the possibility of achieving the net-zero goal.
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Affiliation(s)
- Amna Siddique
- Department of Chemistry, University of Wah, Quaid Avenue, Wah 47040, Pakistan
| | - Hifza Nawaz
- Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Shumaila Razzaque
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka44/52, 01-224 Warsaw, Poland
| | - Anila Tabasum
- Department of Chemistry, University of Wah, Quaid Avenue, Wah 47040, Pakistan
| | - Hugh Gong
- Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Humaira Razzaq
- Department of Chemistry, University of Wah, Quaid Avenue, Wah 47040, Pakistan
| | - Muhammad Umar
- Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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2
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Filipič G, Pirker L, Krajnc AP, Ješelnik M, Remškar M. Enhanced Filtration Efficiency of Natural Materials with the Addition of Electrospun Poly(vinylidene fluoride-co-hexafluoropropylene) Fibres. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2314. [PMID: 36984195 PMCID: PMC10054789 DOI: 10.3390/ma16062314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Pollutants and infectious diseases can spread through air with airborne droplets and aerosols. A respiratory mask can decrease the amount of pollutants we inhale and it can protect us from airborne diseases. With the onset of the COVID-19 pandemic, masks became an everyday item used by a lot of people around the world. As most of them are for a single use, the amount of non-recyclable waste increased dramatically. The plastic from which the masks are made pollutes the environment with various chemicals and microplastic. Here, we investigated the time- and size-dependent filtration efficiency (FE) of aerosols in the range of 25.9 to 685.4 nm of five different natural materials whose FE was enhanced using electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF) fibres. A scanning electron microscope (SEM) was used to determine the morphology and structure of the natural materials as well as the thickness of the PVDF fibres, while the phase of the electrospun fibres was determined by Raman spectroscopy. A thin layer of the electrospun PVDF fibres with the same grammage was sandwiched between two sheets of natural materials, and their FE increased up to 80%. By varying the grammature of the electrospun polymer, we tuned the FE of cotton from 82.6 to 99.9%. Thus, through the optimization of the grammage of the electrospun polymer, the amount of plastic used in the process can be minimized, while achieving sufficiently high FE.
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Affiliation(s)
- Gregor Filipič
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Luka Pirker
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
- Department of Electrochemical Materials, J. Heyrovsky Institute of Physical Chemistry, Dolejškova 3, 182 23 Prague, Czech Republic
| | - Anja Pogačnik Krajnc
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska Ulica 19, 1000 Ljubljana, Slovenia
| | - Marjan Ješelnik
- smartMelamine d.o.o., Tomšičeva Cesta 9, 1330 Kočevje, Slovenia
| | - Maja Remškar
- Jozef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
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Zhou Z, You C, Liu J, Jia J, Xia W, Tian N, Yang Z, Zhang H. Comparative assessment of piezoelectric and pyroelectric-hybrid energy conversion functions for flexible PVDF-based polymers. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03336-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Shetty S, Murugesan S, Salehi S, Pellert A, Scheibel M, Scheibel T, Anandhan S. Evaluation of piezoelectric behavior and biocompatibility of poly(vinylidene fluoride) ultrafine fibers with incorporated talc nanosheets. J Appl Polym Sci 2022. [DOI: 10.1002/app.52631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sawan Shetty
- Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka Mangaluru India
| | - Selvakumar Murugesan
- Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka Mangaluru India
| | - Sahar Salehi
- Lehrstuhl Biomaterialien Universität Bayreuth Bayreuth Germany
| | | | - Melanie Scheibel
- Bayerisches Polymerinstitut (BPI) Universität Bayreuth Bayreuth Germany
| | - Thomas Scheibel
- Lehrstuhl Biomaterialien Universität Bayreuth Bayreuth Germany
- Bayerisches Polymerinstitut (BPI) Universität Bayreuth Bayreuth Germany
- Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB) Universität Bayreuth Bayreuth Germany
- Bayreuther Materialzentrum (BayMAT) Universität Bayreuth Bayreuth Germany
- Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG) Universität Bayreuth Bayreuth Germany
| | - Srinivasan Anandhan
- Department of Metallurgical and Materials Engineering National Institute of Technology Karnataka Mangaluru India
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Biomedyczne właściwości chitozanu – zastosowanie w inżynierii tkankowej Biomedical properties of chitosan: Application in tissue engineering. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2021-0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstrakt
Inżynieria tkankowa to interdyscyplinarna dziedzina badań, która stosuje zasady inżynierii i nauk przyrodniczych do opracowywania substytutów biologicznych, przywracania, utrzymywania lub poprawy funkcji tkanek. Łączy medycy-nę kliniczną, inżynierię mechaniczną, materiałoznawstwo i biologię molekularną. Chitozan jest związkiem, który może być stosowany na szeroką skalę w biomedycynie, m.in. jako nośnik leków, nici chirurgiczne, materiały opatrunkowe przeznaczone do przyspieszonego gojenia ran oraz rusztowania komórkowe w inżynierii tkankowej. Chitozon spełnia najważniejsze kryteria dla biomateriałów, m.in. kompatybilność, odpowiednie właściwości mechaniczne, morfologia i porowatość, nietoksyczność i biodegradowalność. Rusztowania chitozanowe mogą sprzyjać adhezji, różnicowaniu i proliferacji na powierzchni komórek. Z chitozanu można tworzyć różne formy funkcjonalne w zależności od potrzeb i wymagań, w tym: hydrożele 3D, gąbki 3D, folie i membrany oraz nanowłókna. Ze względu na unikalne właściwości fizykochemiczne biopolimer ten może być również wykorzystany do oczyszczania białek terapeutycznych z endotoksyn bakteryjnych, co jest dziś istotnym problemem w oczyszczaniu produktu końcowego w zastosowaniach medycznych. Obecnie terapie oparte na białkach rekombinowanych znajdują szerokie zastosowanie w terapiach celowanych, inżynierii tkankowej oraz szeroko pojętej medycynie regeneracyjnej. Dlatego tak ważny jest współistniejący, dobrze zapro-jektowany system oczyszczania produktu białkowego, który nie zmieni swoich zasadniczych właściwości. Artykuł jest przeglądem aktualnych badań nad zastosowaniem materiałów bioaktywnych na bazie chitozanu w medycynie regene-racyjnej różnych tkanek i narządów (m.in. tkanki chrzęstnej i kostnej, tkanki skórnej czy tkanki nerwowej).
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Muenwacha T, Weeranantanapan O, Chudapongse N, Diaz Sanchez FJ, Maensiri S, Radacsi N, Nuansing W. Fabrication of Piezoelectric Electrospun Termite Nest-like 3D Scaffolds for Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7684. [PMID: 34947288 PMCID: PMC8708465 DOI: 10.3390/ma14247684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/29/2021] [Accepted: 12/08/2021] [Indexed: 11/18/2022]
Abstract
A high piezoelectric coefficient polymer and biomaterial for bone tissue engineering- poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-has been successfully fabricated into 3D scaffolds using the wet electrospinning method. Three-dimensional (3D) scaffolds have significant advantages for tissue engineering applications. Electrospinning is an advanced method and can fabricate 3D scaffolds. However, it has some limitations and is difficult to fabricate nanofibers into 3D shapes because of the low controllability of porosity and internal pore shape. The PVDF-HFP powders were dissolved in a mixture of acetone and dimethylformamide with a ratio of 1:1 at various concentrations of 10, 13, 15, 17, and 20 wt%. However, only the solutions at 15 and 17 wt% with optimized electrospinning parameters can be fabricated into biomimetic 3D shapes. The produced PVDF-HFP 3D scaffolds are in the cm size range and mimic the structure of the natural nests of termites of the genus Apicotermes. In addition, the 3D nanofiber-based structure can also generate more electrical signals than the conventional 2D ones, as the third dimension provides more compression. The cell interaction with the 3D nanofibers scaffold was investigated. The in vitro results demonstrated that the NIH 3T3 cells could attach and migrate in the 3D structures. While conventional electrospinning yields 2D (flat) structures, our bio-inspired electrospun termite nest-like 3D scaffolds are better suited for tissue engineering applications since they can potentially mimic native tissues as they have biomimetic structure, piezoelectric, and biological properties.
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Affiliation(s)
- Thanapon Muenwacha
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Thailand Center of Excellence in Physics (ThEP), Ministry of Higher Education, Science, Research and Innovation, Bangkok 10400, Thailand
| | - Oratai Weeranantanapan
- Institute of Science, School of Preclinical Sciences, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (O.W.); (N.C.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Nuannoi Chudapongse
- Institute of Science, School of Preclinical Sciences, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (O.W.); (N.C.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Francisco Javier Diaz Sanchez
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK;
| | - Santi Maensiri
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Network NANOTEC—SUT on Advanced Nanomaterials and Characterization, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Norbert Radacsi
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK;
| | - Wiwat Nuansing
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Network NANOTEC—SUT on Advanced Nanomaterials and Characterization, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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Allayarov SR, Confer MP, Demidov SV, Yu. Allayarova U, Mishenko DV, Klimanova EN, Dixon DA. Investigation of γ-irradiated polyvinylidene fluoride and its acute toxicity. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Sun L, Gu Q, Wang H, Yu J, Zhou X. Anhydrous proton conductivity of electrospun phosphoric acid-doped PVP-PVDF nanofibers and composite membranes containing MOF fillers. RSC Adv 2021; 11:29527-29536. [PMID: 35479537 PMCID: PMC9040628 DOI: 10.1039/d1ra04307b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/25/2021] [Indexed: 11/21/2022] Open
Abstract
A high-temperature proton exchange membrane was fabricated based on polyvinylidene fluoride (PVDF) and polyvinylpyrrolidone (PVP) blend polymer nanofibers. Using electrospinning method, abundant small ionic clusters can be formed and agglomerated on membrane surface, which would facilitate the proton conductivity. To further enhance the conductivity, phosphoric acid (PA) retention as well as mechanical strength, sulfamic acid (SA)-doped metal-organic framework MIL-101 was incorporated into PVP-PVDF blend nanofiber membranes. As a result, the anhydrous proton conductivity of the composite SA/MIL101@PVP-PVDF membrane reached 0.237 S cm-1 at 160 °C at a moderate acid doping level (ADL) of 12.7. The construction of long-range conducting network by electrospinning method combined with hot-pressing and the synergistic effect between PVP-PVDF, SA/MIL-101 and PA all contribute to the proton conducting behaviors of this composite membrane.
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Affiliation(s)
- Lian Sun
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Quanchao Gu
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Honglei Wang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Jinshan Yu
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
| | - Xingui Zhou
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology Changsha 410073 China
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Saxena P, Shukla P. A comparative analysis of the basic properties and applications of poly (vinylidene fluoride) (PVDF) and poly (methyl methacrylate) (PMMA). Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03790-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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10
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Jariwala T, Ico G, Tai Y, Park H, Myung NV, Nam J. Mechano-Responsive Piezoelectric Nanofiber as an On-Demand Drug Delivery Vehicle. ACS APPLIED BIO MATERIALS 2021; 4:3706-3715. [PMID: 35014455 DOI: 10.1021/acsabm.1c00232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The control over biodistribution and pharmacokinetics is critical to enhance the efficacy and minimize the side effects of therapeutic agents. To address the need for an on-demand drug delivery system for precise control over the release time and the quantity of drugs, we exploited the mechano-responsiveness of piezoelectric poly(vinylidene fluoride-trifluroethylene) (P(VDF-TrFE)) nanofibers for drug delivery applications. The large surface area-to-volume ratio inherent to nanomaterials, together with the transformative piezoelectric properties, allowed us to use the material as an ultrasensitive and mechano-responsive drug delivery platform driven by the direct piezoelectric effect. The intrinsic negative zeta potential of the nanofibers was utilized to electrostatically load cationic drug molecules, where surface potential changes by exogenous mechanical actuation trigger the release of drug molecules. We show that the drug release kinetics of the P(VDF-TrFE) nanofibers depends on the fiber diameter, thus piezoelectric properties. We further demonstrated that the drug release quantity can be tuned by the applied pressure or dose of physiologically safe corporeal shockwaves as a mechanical stimulus in in vitro and ex vivo models. Overall, we demonstrated the utility of piezoelectric electrospun nanofibers for mechano-responsive controlled drug release.
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Affiliation(s)
- Tanvi Jariwala
- Department of Bioengineering, University of California, Riverside, California 92521, United States
| | - Gerardo Ico
- Department of Bioengineering, University of California, Riverside, California 92521, United States
| | - Youyi Tai
- Department of Bioengineering, University of California, Riverside, California 92521, United States
| | - Honghyun Park
- Korea Institute of Materials Science, 797 Changwondaero, Seongsan gu, Changwon, Gyeongnam 51508, South Korea
| | - Nosang V Myung
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jin Nam
- Department of Bioengineering, University of California, Riverside, California 92521, United States
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King WE, Bowlin GL. Near-Field Electrospinning and Melt Electrowriting of Biomedical Polymers-Progress and Limitations. Polymers (Basel) 2021; 13:1097. [PMID: 33808288 PMCID: PMC8037214 DOI: 10.3390/polym13071097] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 12/18/2022] Open
Abstract
Near-field electrospinning (NFES) and melt electrowriting (MEW) are the process of extruding a fiber due to the force exerted by an electric field and collecting the fiber before bending instabilities occur. When paired with precise relative motion between the polymer source and the collector, a fiber can be directly written as dictated by preprogrammed geometry. As a result, this precise fiber control results in another dimension of scaffold tailorability for biomedical applications. In this review, biomedically relevant polymers that to date have manufactured fibers by NFES/MEW are explored and the present limitations in direct fiber writing of standardization in published setup details, fiber write throughput, and increased ease in the creation of complex scaffold geometries are discussed.
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Affiliation(s)
- William E. King
- Department of Biomedical Engineering, University of Memphis, Memphis, TN 38152, USA;
- Department of Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Gary L. Bowlin
- Department of Biomedical Engineering, University of Memphis, Memphis, TN 38152, USA;
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Park SE, Yeon GB, Goo HG, Seo DS, Dayem AA, Lee KE, Park HM, Cho SG, Kim DS. Maintenance and differentiation of human ES cells on polyvinylidene fluoride scaffolds immobilized with a vitronectin-derived peptide. J Cell Physiol 2020; 236:3510-3520. [PMID: 33090499 DOI: 10.1002/jcp.30095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 12/31/2022]
Abstract
Polyvinylidene fluoride (PVDF) is biocompatible, easy to fabricate, and has piezoelectric properties; it has been used for many biomedical applications including stem cell engineering. However, long-term cultivation of human embryonic stem cells (hESCs) and their differentiation toward cardiac lineages on PVDF have not been investigated. Herein, PVDF nanoscaled membrane scaffolds were fabricated by electrospinning; a vitronectin-derived peptide-mussel adhesive protein fusion (VNm) was immobilized on the scaffolds. hESCs cultured on the VNm-coated PVDF scaffold (VNm-PVDF scaffold) were stably expanded for more than 10 passages while maintaining the expression of pluripotency markers and genomic integrity. Under cardiac differentiation conditions, hESCs on the VNm-PVDF scaffold generated more spontaneously beating colonies and showed the upregulation of cardiac-related genes, compared with those cultured on Matrigel and VNm alone. Thus, VNm-PVDF scaffolds may be suitable for the long-term culture of hESCs and their differentiation into cardiac cells, thus expanding their application in regenerative medicine.
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Affiliation(s)
- Sang Eun Park
- AMO Lifescience Co., Ltd., Seoul, Seocho-gu, Republic of Korea
| | - Gyu-Bum Yeon
- Department of Biotechnology, Korea University, Seoul, Seongbuk-gu, Republic of Korea
| | - Hui-Gwan Goo
- AMO Lifescience Co., Ltd., Seoul, Seocho-gu, Republic of Korea
| | - Dong Sik Seo
- AMO Lifescience Co., Ltd., Seoul, Seocho-gu, Republic of Korea
| | - Ahmed A Dayem
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center (MCRC), Konkuk University, Seoul, Gwangjin-gu, Republic of Korea
| | - Kyung Eun Lee
- Advance Analysis Center, Korean Institute of Science and Technology, Seoul, Seongbuk-gu, Republic of Korea
| | - Hyun-Mee Park
- Advance Analysis Center, Korean Institute of Science and Technology, Seoul, Seongbuk-gu, Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center (MCRC), Konkuk University, Seoul, Gwangjin-gu, Republic of Korea
| | - Dae-Sung Kim
- Department of Biotechnology, Korea University, Seoul, Seongbuk-gu, Republic of Korea
- Department of Pediatrics, Guro Hospital, Korea University College of Medicine, Seoul, Guro-gu, Republic of Korea
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13
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Jiang J, Tu S, Fu R, Li J, Hu F, Yan B, Gu Y, Chen S. Flexible Piezoelectric Pressure Tactile Sensor Based on Electrospun BaTiO 3/Poly(vinylidene fluoride) Nanocomposite Membrane. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33989-33998. [PMID: 32610011 DOI: 10.1021/acsami.0c08560] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Poly(vinylidene fluoride) (PVDF)-based piezoelectric materials are promising candidates for sensors, transducers, and actuators, due to several distinctive characteristics such as good flexibility, easy processability, and high mechanical resistance. In the present work, PVDF-based nanocomposites loaded with BaTiO3 nanoparticles (NPs) of various weight fractions were prepared by the electrospinning technique and used for the fabrication of a flexible piezoelectric pressure tactile sensor (PPTS). The addition (5, 10, and 20 wt %) of piezoelectric BaTiO3 NPs improves the piezoelectric performance, especially the β phase crystals of PVDF/BaTiO3 (10 wt %) nanocomposites that can reach 91.0%. In addition, the mechanical strength of PVDF/BaTiO3 nanocomposites is up to 26.7 MPa, which is an increase of 66% compared to neat PVDF. It should be emphasized that the elongation at break continuously increases from 71% to 153% with increasing BaTiO3 NPs. More importantly, the PPTS (piezoelectric pressure tactile sensor) with the combination of electrospun PVDF/BaTiO3 nanocomposite membranes and polydimethylsiloxane (PDMS) displays excellent flexibility and linear response to external mechanical force. The flexible PPTS devices capable of detecting different music sounds have potential uses in wide fields, such as voice recognition, speech therapy, and ultrasound imaging.
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Affiliation(s)
- Jie Jiang
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
- Département de Chimie, Université de Sherbrooke, Sherbrooke, J1K 2R1 Québec, Canada
| | - Shijian Tu
- Zhonghao Chenguang Research Institute of Chemistry Industry, Fushun 643201, China
| | - Runfang Fu
- Department of Chemical Engineering, Faculty of Engineering, Monash University-Clayton, Clayton, Victoria 3800, Australia
| | - Jingjing Li
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
| | - Fei Hu
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
| | - Bin Yan
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
| | - Yingchun Gu
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
| | - Sheng Chen
- Functional Polymer Materials Laboratory, College of Biomass Science and Engineering, Sichuan University, Chendu 610065, China
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Dong L, Closson AB, Jin C, Nie Y, Cabe A, Escobedo D, Huang S, Trase I, Xu Z, Chen Z, Feldman MD, Zhang JXJ. Multifunctional Pacemaker Lead for Cardiac Energy Harvesting and Pressure Sensing. Adv Healthc Mater 2020; 9:e2000053. [PMID: 32347010 DOI: 10.1002/adhm.202000053] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/27/2020] [Indexed: 12/12/2022]
Abstract
Biomedical self-sustainable energy generation represents a new frontier of power solution for implantable biomedical devices (IMDs), such as cardiac pacemakers. However, almost all reported cardiac energy harvesting designs have not yet reached the stage of clinical translation. A major bottleneck has been the need of additional surgeries for the placements of these devices. Here, integrated piezoelectric-based energy harvesting and sensing designs are reported, which can be seamlessly incorporated into existing IMDs for ease of clinical translation. In vitro experiments validate the energy harvesting process by simulating the bending and twisting motion during heart cycle. Clinical translation is demonstrated in four porcine hearts in vivo under various conditions. Energy harvesting strategy utilizes pacemaker leads as a means of reducing the reliance on batteries and demonstrates the charging ability for extending the lifetime of a pacemaker battery by 20%, which provides a promising self-sustainable energy solution for IMDs. The additional self-powered blood pressure sensing is discussed, and the reported results demonstrate the potential in alerting arrhythmias by monitoring the right ventricular pressure variations. This combined cardiac energy harvesting and blood pressure sensing strategy provides a multifunctional, transformative while practical power and diagnosis solution for cardiac pacemakers and next generation of IMDs.
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Affiliation(s)
- Lin Dong
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | | | - Congran Jin
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Yuan Nie
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Andrew Cabe
- Division of Cardiology Department of Medicine The University of Texas Health Science Center at San Antonio San Antonio TX 78229 USA
| | - Danny Escobedo
- Division of Cardiology Department of Medicine The University of Texas Health Science Center at San Antonio San Antonio TX 78229 USA
| | - Shicheng Huang
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Ian Trase
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Zhe Xu
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Zi Chen
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
| | - Marc D. Feldman
- Division of Cardiology Department of Medicine The University of Texas Health Science Center at San Antonio San Antonio TX 78229 USA
| | - John X. J. Zhang
- Thayer School of Engineering Dartmouth College Hanover NH 03755 USA
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15
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Horakova J, Klicova M, Erben J, Klapstova A, Novotny V, Behalek L, Chvojka J. Impact of Various Sterilization and Disinfection Techniques on Electrospun Poly-ε-caprolactone. ACS OMEGA 2020; 5:8885-8892. [PMID: 32337451 PMCID: PMC7178787 DOI: 10.1021/acsomega.0c00503] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/31/2020] [Indexed: 05/20/2023]
Abstract
Electrospun materials made from biodegradable polycaprolactone are used widely in various tissue engineering and regenerative medicine applications because of their morphological similarity to the extracellular matrix. However, the main prerequisite for the use of such materials in clinical practice consists of the selection of the appropriate sterilization technique. This study is devoted to the study of the impact of traditional sterilization and disinfection methods on a nanofibrous polycaprolactone layer constructed by means of the needleless electrospinning technique. It was determined that hydrogen peroxide plasma treatment led to the loss of fibrous morphology and the creation of a foil. However, certain sterilization (ethylene oxide, gamma irradiation, and peracetic acid) and disinfection techniques (ethanol and UV irradiation) were found not to lead to a change in morphology; thus, the study investigates their impact on thermal properties, molecular weight, and interactions with a fibroblast cell line. It was determined that the surface properties that guide cell adhesion and proliferation were affected more than the bulk properties. The highest proliferation rate of fibroblasts seeded on nanofibrous scaffolds was observed with respect to gamma-irradiated polycaprolactone, while the lowest proliferation rate was observed following ethylene oxide sterilization.
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Affiliation(s)
- Jana Horakova
- Department of Nonwovens
and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Marketa Klicova
- Department of Nonwovens
and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Jakub Erben
- Department of Nonwovens
and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Andrea Klapstova
- Department of Nonwovens
and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Vit Novotny
- Department of Nanomaterials in Natural
Sciences, Institute of Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Lubos Behalek
- Department of Engineering Technology, Faculty
of Mechanical Engineering, Technical University
of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
| | - Jiri Chvojka
- Department of Nonwovens
and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402/2, 460 01 Liberec, Czech Republic
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16
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Mechanical properties of polymeric implant materials produced by extrusion-based additive manufacturing. J Mech Behav Biomed Mater 2020; 104:103611. [DOI: 10.1016/j.jmbbm.2019.103611] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/13/2019] [Accepted: 12/30/2019] [Indexed: 01/08/2023]
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17
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Liu Y, Wang Q. Ferroelectric Polymers Exhibiting Negative Longitudinal Piezoelectric Coefficient: Progress and Prospects. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902468. [PMID: 32195083 PMCID: PMC7080546 DOI: 10.1002/advs.201902468] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/08/2019] [Indexed: 05/11/2023]
Abstract
Piezoelectric polymers are well-recognized to hold great promise for a wide range of flexible, wearable, and biocompatible applications. Among the known piezoelectric polymers, ferroelectric polymers represented by poly(vinylidene fluoride) and its copolymer poly(vinylidene fluoride-co-trifluoroethylene) possess the best piezoelectric coefficients. However, the physical origin of negative longitudinal piezoelectric coefficients occurring in the polymers remains elusive. To address this long-standing challenge, several theoretical models proposed over the past decades, which are controversial in nature, have been revisited and reviewed. It is concluded that negative longitudinal piezoelectric coefficients arise from the negative longitudinal electrostriction in the crystalline domain of the polymers, independent of amorphous and crystalline-amorphous interfacial regions. The crystalline origin of piezoelectricity offers unprecedented opportunities to improve electromechanical properties of polymers via structural engineering, i.e., design of morphotropic phase boundaries in ferroelectric polymers.
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Affiliation(s)
- Yang Liu
- Department of Materials Science and EngineeringThe Pennsylvania State UniversityUniversity ParkPA16802USA
| | - Qing Wang
- Department of Materials Science and EngineeringThe Pennsylvania State UniversityUniversity ParkPA16802USA
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18
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Rehman A, Houshyar S, Wang X. Nanodiamond in composite: Biomedical application. J Biomed Mater Res A 2020; 108:906-922. [DOI: 10.1002/jbm.a.36868] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Aisha Rehman
- School of Fashion and Textiles RMIT University Brunswick Victoria Australia
| | - Shadi Houshyar
- School of Engineering RMIT University Melbourne Victoria Australia
| | - Xin Wang
- School of Fashion and Textiles RMIT University Brunswick Victoria Australia
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19
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Cheng MH, Yang CY, Tee R, Hong YT, Lu CC. Efficacy validation of a lymphatic drainage device for lymphedema drainage in a rat model. J Surg Oncol 2019; 120:1162-1168. [PMID: 31556139 DOI: 10.1002/jso.25707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 08/01/2019] [Indexed: 11/11/2022]
Abstract
BACKGROUND Vascularized lymph node transfer (VLNT) is an effective surgery for extremity lymphedema. This study evaluated a lymphatic drainage device (LDD) for the drainage of accumulated fluid into the venous system. METHODS Micropore filtering membranes with pore sizes of 5, 0.65, and 0.22 μm polyvinylidene difluoride, and 0.8 μm Nylon Net Filter were evaluated to determine the in vitro efficiency of drainage flow of an LDD. The two superior membranes were further used for the evaluation of the inflow and outflow of the LDD in vivo using 5% albumin. RESULTS At 5 minutes, the volumes drained with 5, 0.65, and 0.22 μm polyvinylidene difluoride and 0.8 μm nylon membranes were 15.2, 2.77, 2.37, and 0.59 mL, respectively (P < .01). At 10 minutes, the collected volumes of 5 and 0.65 μm polyvinylidene difluoride were 1788 and 1051 μL (P = .3). The indocyanine green fluorescence was detected at 50 seconds for the 5 μm polyvinylidene difluoride membrane but not for the 0.65 μm membrane. CONCLUSIONS The study successfully demonstrated the proof-of-concept of the LDD prototype that mimicked VLNT with drainage of 5% albumin into the venous system in a rat model.
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Affiliation(s)
- Ming-Huei Cheng
- Division of Reconstructive Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Collage of Medical, Chang Gung University, Taoyuan, Taiwan.,Center for Tissue Engineering, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Chin Yu Yang
- Division of Reconstructive Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Collage of Medical, Chang Gung University, Taoyuan, Taiwan.,Center for Tissue Engineering, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Richard Tee
- Division of Reconstructive Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Collage of Medical, Chang Gung University, Taoyuan, Taiwan.,Center for Tissue Engineering, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Yu-Ting Hong
- Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Chih-Cheng Lu
- Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei, Taiwan
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20
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Ha T, Tran J, Liu S, Jang H, Jeong H, Mitbander R, Huh H, Qiu Y, Duong J, Wang RL, Wang P, Tandon A, Sirohi J, Lu N. A Chest-Laminated Ultrathin and Stretchable E-Tattoo for the Measurement of Electrocardiogram, Seismocardiogram, and Cardiac Time Intervals. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900290. [PMID: 31380208 PMCID: PMC6662084 DOI: 10.1002/advs.201900290] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/01/2019] [Indexed: 05/20/2023]
Abstract
Seismocardiography (SCG) is a measure of chest vibration associated with heartbeats. While skin soft electronic tattoos (e-tattoos) have been widely reported for electrocardiogram (ECG) sensing, wearable SCG sensors are still based on either rigid accelerometers or non-stretchable piezoelectric membranes. This work reports an ultrathin and stretchable SCG sensing e-tattoo based on the filamentary serpentine mesh of 28-µm-thick piezoelectric polymer, polyvinylidene fluoride (PVDF). 3D digital image correlation (DIC) is used to map chest vibration to identify the best location to mount the e-tattoo and to investigate the effects of substrate stiffness. As piezoelectric sensors easily suffer from motion artifacts, motion artifacts are effectively reduced by performing subtraction between a pair of identical SCG tattoos placed adjacent to each other. Integrating the soft SCG sensor with a pair of soft gold electrodes on a single e-tattoo platform forms a soft electro-mechano-acoustic cardiovascular (EMAC) sensing tattoo, which can perform synchronous ECG and SCG measurements and extract various cardiac time intervals including systolic time interval (STI). Using the EMAC tattoo, strong correlations between STI and the systolic/diastolic blood pressures, are found, which may provide a simple way to estimate blood pressure continuously and noninvasively using one chest-mounted e-tattoo.
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Affiliation(s)
- Taewoo Ha
- Department of Electrical and Computer EngineeringUniversity of Texas at AustinTX78712USA
| | - Jason Tran
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Siyi Liu
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Hongwoo Jang
- Texas Materials InstituteUniversity of Texas at AustinTX78712USA
| | - Hyoyoung Jeong
- Department of Electrical and Computer EngineeringUniversity of Texas at AustinTX78712USA
| | - Ruchika Mitbander
- Department of Biomedical EngineeringUniversity of Texas at AustinTX78712USA
| | - Heeyong Huh
- Department of Mechanical EngineeringUniversity of Texas at AustinTX78712USA
| | - Yitao Qiu
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Jason Duong
- Department of Biomedical EngineeringUniversity of Texas at AustinTX78712USA
| | - Rebecca L. Wang
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Pulin Wang
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Animesh Tandon
- Departments of Pediatrics, Radiology, and Biomedical EngineeringDivision of CardiologyUniversity of TexasSouthwestern Medical SchoolChildren's Medical Center DallasTX75235USA
| | - Jayant Sirohi
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
| | - Nanshu Lu
- Department of Electrical and Computer EngineeringUniversity of Texas at AustinTX78712USA
- Department of Aerospace Engineering and Engineering MechanicsUniversity of Texas at AustinTX78712USA
- Texas Materials InstituteUniversity of Texas at AustinTX78712USA
- Department of Biomedical EngineeringUniversity of Texas at AustinTX78712USA
- Department of Mechanical EngineeringUniversity of Texas at AustinTX78712USA
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21
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Li Y, Liao C, Tjong SC. Electrospun Polyvinylidene Fluoride-Based Fibrous Scaffolds with Piezoelectric Characteristics for Bone and Neural Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E952. [PMID: 31261995 PMCID: PMC6669491 DOI: 10.3390/nano9070952] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 02/07/2023]
Abstract
Polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE) with excellent piezoelectricity and good biocompatibility are attractive materials for making functional scaffolds for bone and neural tissue engineering applications. Electrospun PVDF and P(VDF-TrFE) scaffolds can produce electrical charges during mechanical deformation, which can provide necessary stimulation for repairing bone defects and damaged nerve cells. As such, these fibrous mats promote the adhesion, proliferation and differentiation of bone and neural cells on their surfaces. Furthermore, aligned PVDF and P(VDF-TrFE) fibrous mats can enhance neurite growth along the fiber orientation direction. These beneficial effects derive from the formation of electroactive, polar β-phase having piezoelectric properties. Polar β-phase can be induced in the PVDF fibers as a result of the polymer jet stretching and electrical poling during electrospinning. Moreover, the incorporation of TrFE monomer into PVDF can stabilize the β-phase without mechanical stretching or electrical poling. The main drawbacks of electrospinning process for making piezoelectric PVDF-based scaffolds are their small pore sizes and the use of highly toxic organic solvents. The small pore sizes prevent the infiltration of bone and neuronal cells into the scaffolds, leading to the formation of a single cell layer on the scaffold surfaces. Accordingly, modified electrospinning methods such as melt-electrospinning and near-field electrospinning have been explored by the researchers to tackle this issue. This article reviews recent development strategies, achievements and major challenges of electrospun PVDF and P(VDF-TrFE) scaffolds for tissue engineering applications.
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Affiliation(s)
- Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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22
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Ma N, Cao J, Li H, Zhang Y, Wang H, Meng J. Surface grafting of zwitterionic and PEGylated cross-linked polymers toward PVDF membranes with ultralow protein adsorption. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.053] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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23
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Wang X, Jolliffe A, Carr B, Zhang Q, Bilger M, Cui Y, Wu J, Wang X, Mahoney M, Rojas-Pena A, Hoenerhoff MJ, Douglas J, Bartlett RH, Xi C, Bull JL, Meyerhoff ME. Nitric oxide-releasing semi-crystalline thermoplastic polymers: preparation, characterization and application to devise anti-inflammatory and bactericidal implants. Biomater Sci 2019; 6:3189-3201. [PMID: 30328426 DOI: 10.1039/c8bm00849c] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Semi-crystalline thermoplastics are an important class of biomaterials with applications in creating extracorporeal and implantable medical devices. In situ release of nitric oxide (NO) from medical devices can enhance their performance via NO's potent anti-thrombotic, bactericidal, anti-inflammatory, and angiogenic activity. However, NO-releasing semi-crystalline thermoplastic systems are limited and the relationship between polymer crystallinity and NO release profile is unknown. In this paper, the functionalization of poly(ether-block-amide) (PEBA), Nylon 12, and polyurethane tubes, as examples of semi-crystalline polymers, with the NO donor S-nitroso-N-acetylpenicillamine (SNAP) within, is demonstrated via a polymer swelling method. The degree of crystallinity of the polymer plays a crucial role in both SNAP impregnation and NO release. Nylon 12, which has a relatively high degree of crystallinity, exhibits an unprecedented NO release duration of over 5 months at a low NO level, while PEBA tubing exhibits NO release over days to weeks. As a new biomedical application of NO, the NO-releasing PEBA tubing is examined as a cannula for continuous subcutaneous insulin infusion. The released NO is shown to enhance insulin absorption into the bloodstream probably by suppressing the tissue inflammatory response, and thereby could benefit insulin pump therapy for diabetes management.
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Affiliation(s)
- Xuewei Wang
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
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24
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Yuan H, Han P, Tao K, Liu S, Gazit E, Yang R. Piezoelectric Peptide and Metabolite Materials. RESEARCH (WASHINGTON, D.C.) 2019; 2019:9025939. [PMID: 31912048 PMCID: PMC6944492 DOI: 10.34133/2019/9025939] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/11/2019] [Indexed: 01/09/2023]
Abstract
Piezoelectric materials are important for many physical and electronic devices. Although many piezoelectric ceramics exhibit good piezoelectricity, they often show poor compatibility with biological systems that limits their biomedical applications. Piezoelectric peptide and metabolite materials benefit from their intrinsic biocompatibility, degradability, and convenient biofunctionalization and are promising candidates for biological and medical applications. Herein, we provide an account of the recent progress of research works on piezoelectric peptide and metabolite materials. This review focuses on the growth mechanism of peptide and metabolite micro- and nanomaterials. The influence of self-assembly processes on their piezoelectricity is discussed. Peptide and metabolite materials demonstrate not only outstanding piezoelectric properties but also unique electronic, optical, and physical properties, enabling their applications in nanogenerators, sensors, and optical waveguiding devices.
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Affiliation(s)
- Hui Yuan
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
| | - Peipei Han
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
| | - Kai Tao
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Shuhai Liu
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Rusen Yang
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
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25
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Khalifehzadeh R, Ratner BD. Trifluoromethyl-functionalized poly(lactic acid): a fluoropolyester designed for blood contact applications. Biomater Sci 2019; 7:3764-3778. [DOI: 10.1039/c9bm00353c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Fluorinated polymers are strong candidates for development of new cardiovascular medical devices, due to their lower thrombogenicity as compared to other polymers used for cardiovascular implants.
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Affiliation(s)
| | - Buddy D. Ratner
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
- Department of Bioengineering
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26
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Szewczyk PK, Metwally S, Karbowniczek JE, Marzec MM, Stodolak-Zych E, Gruszczyński A, Bernasik A, Stachewicz U. Surface-Potential-Controlled Cell Proliferation and Collagen Mineralization on Electrospun Polyvinylidene Fluoride (PVDF) Fiber Scaffolds for Bone Regeneration. ACS Biomater Sci Eng 2018; 5:582-593. [DOI: 10.1021/acsbiomaterials.8b01108] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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27
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Amini F, Semnani D, Karbasi S, Banitaba SN. A novel bilayer drug-loaded wound dressing of PVDF and PHB/Chitosan nanofibers applicable for post-surgical ulcers. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1506982] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Fatemeh Amini
- Department of textile engineering, Isfahan University of Technology, Isfahan, Iran
| | - Dariush Semnani
- Department of textile engineering, Isfahan University of Technology, Isfahan, Iran
| | - Saeed Karbasi
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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28
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Galiano F, Briceño K, Marino T, Molino A, Christensen KV, Figoli A. Advances in biopolymer-based membrane preparation and applications. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.07.059] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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29
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Surface fluorination of polylactide as a path to improve platelet associated hemocompatibility. Acta Biomater 2018; 78:23-35. [PMID: 30036719 DOI: 10.1016/j.actbio.2018.07.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/18/2018] [Accepted: 07/19/2018] [Indexed: 12/11/2022]
Abstract
Surface-induced thrombosis is still a significant clinical concern for many types of blood-contacting medical devices. In particular, protein adsorption and platelet adhesion are important events due to their ability to trigger the coagulation cascade and initiate thrombosis. Poly(lactic acid) (PLA) has been the predominant polymer used for making bioresorbable stents. Despite long-term advantages, these stents are associated with higher rates of early thrombosis compared with permanent metallic stents. To address this issue, we modified the surface of PLA with a perfluoro compound facilitated by surface activation using radio frequency (RF) plasma. Fluoropolymers have been extensively used in blood contacting materials, such as blood vessel replacements due to their reduced thrombogenicity and reduced platelet reactivity. The compositions of plasma-treated surfaces were determined by electron spectroscopy for chemical analysis (ESCA). Also, contact angle measurements, cell cytotoxicity and the degradation profile of the treated polymers are presented. Finally, relevant blood compatibility parameters, including plasma protein adsorption, platelet adhesion and morphology, were evaluated. We hypothesized that tight binding of adsorbed albumin by fluoropolymers enhances its potential for blood-contacting applications. STATEMENT OF SIGNIFICANCE Although bioresorbable stents made from poly(lactic acid) (PLA) may have long-term clinical advantages, they have shown higher rates of early thrombosis as compared with permanent metallic stents. To improve the thromboresistance of PLA, we developed a novel method for surface fluorination of this polymer with a perfluoro compound. Fluoropolymers (e.g., expanded polytetrafluoroethylene) have long been used in blood-contacting applications due to their satisfactory clinical performance. This is the first report of PLA surface fluorination which might be applied to the fabrication of a new generation of fluorinated PLA stents with improved platelet interaction, tunable degradability and drug release capabilities. Also, we describe a general strategy for improving the platelet interactions with biomaterials based on albumin retention.
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30
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Al Halabi F, Gryshkov O, Kuhn AI, Kapralova VM, Glasmacher B. Force induced piezoelectric effect of polyvinylidene fluoride and polyvinylidene fluoride-co-trifluoroethylene nanofibrous scaffolds. Int J Artif Organs 2018; 41:811-822. [DOI: 10.1177/0391398818785049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Polyvinylidene fluoride and its co-polymer with trifluoroethylene are promising biomaterials for supporting nerve regeneration processes because of their proven biocompatibility and piezoelectric properties that could stimulate cell ingrowth due to electrical activity upon mechanical deformation. This study reports the piezoelectric effect of electrospun polyvinylidene fluoride scaffolds in response to mechanical loading. An impact test machine was used to evaluate the generation of electrical voltage upon application of an impact load. Scaffolds were produced via electrospinning from polyvinylidene fluoride and polyvinylidene fluoride-co-trifluoroethylene with concentrations of 10–20 wt% dissolved in N,N-dimethylformamide (DMF) and acetone (6:4). The structural and thermal properties of scaffolds were analyzed using Fourier Transform Infrared Spectroscopy and Differential Scanning Calorimetry, respectively. The piezoelectric response of the scaffolds was induced using a custom-made manual impact press machine. Impact forces between 0.4 and 14 N were applied. Fourier Transform Infrared Spectroscopy and Differential Scanning Calorimetry results demonstrated the piezoelectric effect of the electrospun polyvinylidene fluoride and polyvinylidene fluoride-co-trifluoroethylene scaffolds. All the scaffolds exhibited a piezoelectric polar beta-phase formation. Their thermal enthalpies were higher than the value of the initial materials and exhibited a better tendency of crystallization. The electrospun scaffolds exhibited piezoelectric responses in form of voltage by applying impact load. Polyvinylidene fluoride-co-trifluoroethylene scaffolds showed higher values in the range of 6–30 V as compared to pure polyvinylidene fluoride. Here, the mechanically induced electrical impulses measured were between 2.5 and 8 V. Increasing the impact forces did not increase the piezoelectric effect. The results demonstrate the possibility of producing electrospun polyvinylidene fluoride and polyvinylidene fluoride-co-trifluoroethylene scaffolds as nerve guidance with piezoelectric response. Further experiments must be carried out to analyze the piezoelectricity at dynamic conditions.
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Affiliation(s)
- Fedaa Al Halabi
- Institute for Multiphase Processes, Leibniz Universität Hannover, Hannover, Germany
| | - Oleksandr Gryshkov
- Institute for Multiphase Processes, Leibniz Universität Hannover, Hannover, Germany
| | - Antonia I Kuhn
- Institute for Multiphase Processes, Leibniz Universität Hannover, Hannover, Germany
| | - Viktoria M Kapralova
- Higher School of Applied Physics and Space Technologies, Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russia
| | - Birgit Glasmacher
- Institute for Multiphase Processes, Leibniz Universität Hannover, Hannover, Germany
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Patil Y, Bilalis P, Polymeropoulos G, Almahdali S, Hadjichristidis N, Rodionov V. A Novel Poly(vinylidene fluoride)-Based 4-Miktoarm Star Terpolymer: Synthesis and Self-Assembly. Mol Pharm 2018. [DOI: 10.1021/acs.molpharmaceut.8b00010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yogesh Patil
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Panayiotis Bilalis
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - George Polymeropoulos
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Sarah Almahdali
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Nikos Hadjichristidis
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Valentin Rodionov
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
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32
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Cardoso VF, Correia DM, Ribeiro C, Fernandes MM, Lanceros-Méndez S. Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications. Polymers (Basel) 2018; 10:polym10020161. [PMID: 30966197 PMCID: PMC6415094 DOI: 10.3390/polym10020161] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/02/2018] [Accepted: 02/06/2018] [Indexed: 12/12/2022] Open
Abstract
Fluorinated polymers constitute a unique class of materials that exhibit a combination of suitable properties for a wide range of applications, which mainly arise from their outstanding chemical resistance, thermal stability, low friction coefficients and electrical properties. Furthermore, those presenting stimuli-responsive properties have found widespread industrial and commercial applications, based on their ability to change in a controlled fashion one or more of their physicochemical properties, in response to single or multiple external stimuli such as light, temperature, electrical and magnetic fields, pH and/or biological signals. In particular, some fluorinated polymers have been intensively investigated and applied due to their piezoelectric, pyroelectric and ferroelectric properties in biomedical applications including controlled drug delivery systems, tissue engineering, microfluidic and artificial muscle actuators, among others. This review summarizes the main characteristics, microstructures and biomedical applications of electroactive fluorinated polymers.
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Affiliation(s)
- Vanessa F Cardoso
- Centro/Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal.
- CMEMS-UMinho, Universidade do Minho, DEI, 4800-058 Guimaraes, Portugal.
| | - Daniela M Correia
- Departamento de Química e CQ-VR, Universidade de Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
| | - Clarisse Ribeiro
- Centro/Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal.
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Margarida M Fernandes
- Centro/Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal.
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Senentxu Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain.
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33
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Jiang W, Zhao T, Liu H, Jia R, Niu D, Chen B, Shi Y, Yin L, Lu B. Laminated pyroelectric generator with spin coated transparent poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) electrodes for a flexible self-powered stimulator. RSC Adv 2018; 8:15134-15140. [PMID: 35541318 PMCID: PMC9079999 DOI: 10.1039/c8ra00491a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/03/2018] [Indexed: 11/21/2022] Open
Abstract
A laminated pyroelectric generator with spray coated transparent PEDOT:PSS electrodes has been designed for use as a flexible self-powered stimulator.
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Affiliation(s)
- Weitao Jiang
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Tingting Zhao
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Hongzhong Liu
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Rui Jia
- Department of Neurology
- First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Dong Niu
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Bangdao Chen
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Yongsheng Shi
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Lei Yin
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Bingheng Lu
- State Key Laboratory for Manufacturing Systems Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
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34
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Xue P, Li Q, Li Y, Sun L, Zhang L, Xu Z, Kang Y. Surface Modification of Poly(dimethylsiloxane) with Polydopamine and Hyaluronic Acid To Enhance Hemocompatibility for Potential Applications in Medical Implants or Devices. ACS APPLIED MATERIALS & INTERFACES 2017; 9:33632-33644. [PMID: 28901742 DOI: 10.1021/acsami.7b10260] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Poly(dimethylsiloxane) (PDMS) has been widely utilized in micro-electromechanical systems (MEMS) and implantable devices. To improve the hemocompatibility of a PDMS-based implant, a facile technique was developed by modifying PDMS with a hyaluronic acid (HA) and polydopamine (PDA) composite (HA/PDA). Under appropriate ratio of HA to PDA, platelet adhesion and activation were considerably reduced on modified PDMS substrates, indicating an enhanced hemocompatibility compared to native PDMS or those coated with HA or PDA solely. HA/PDA coating also posed minimal cytotoxicity on the adhesion and proliferation of endothelial cells (HUVECs). The anti-inflammation effect of the modified PDMS surface was characterized based on the expression of critical cytokines in adherent macrophages. This study revealed that the hemocompatibility, cytotoxicity, and anti-inflammation properties could be tailored conveniently by adjusting the ratio of HA and PDA composite on the modified PDMS surface, which has an exceptional potential as the core or packaging material for constructing implantable devices in biomedical applications.
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Affiliation(s)
- Peng Xue
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University , Chongqing 400715, China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Chongqing 400715, China
| | - Qian Li
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University , Chongqing 400715, China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Chongqing 400715, China
| | - Yuan Li
- Yongchuan Hospital, Chongqing Medical University , Chongqing 402160, China
| | - Lihong Sun
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University , Chongqing 400715, China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Chongqing 400715, China
| | - Lei Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University , Chongqing 400716, China
| | - Zhigang Xu
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University , Chongqing 400715, China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Chongqing 400715, China
| | - Yuejun Kang
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University , Chongqing 400715, China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Chongqing 400715, China
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35
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Abstract
The prevalence of presbyopia continues to increase every year. The therapeutic approaches to presbyopia cover the spectrum of non-surgical to surgical techniques. With recent advances in biocompatible materials, corneal inlays make a strong case for their place within the treatment spectrum. This article takes a closer look at three of the current corneal inlay models: KAMRA, Raindrop, and Presbia Flexivue Microlens. Each design approach and mode of action is described with data from key clinical trials. Furthermore, the ability to choose the most suitable corneal inlay is presented by comparing each model and identifying their similarities and differences. The article then concludes by touching on the future of corneal inlays, looking at associated conditions and complications and how to manage them, as well as an expert’s personal point of view of enhanced ideas for continuing the growth and success of corneal inlays in the market.
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36
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Bioinspired and biocompatible carbon nanotube-Ag nanohybrid coatings for robust antibacterial applications. Acta Biomater 2017; 51:479-494. [PMID: 28082114 DOI: 10.1016/j.actbio.2017.01.027] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/14/2016] [Accepted: 01/06/2017] [Indexed: 12/25/2022]
Abstract
The design of self-sterilizing surfaces with favorable biocompatibility is acknowledged as an effective approach to deal with the bacterial infections of biomedical devices. In this study, we report an intriguing protocol for the large-scale fabrication of self-sterilizing and biocompatible surface film coatings by using polymer shielded silver nanoparticle loaded oxidized carbon nanotube (AgNPs@oCNT) nano-dispersions. To achieve the antibacterial coatings, the bioinspired positively charged and negatively charged AgNPs@oCNTs were alternately deposited onto substrates by spray-coating assisted layer-by-layer assembly. Then the bacterial inhibitory zones, optical density value monitoring, bacterial killing efficiency and adhesion were investigated; and all the results revealed that the AgNPs@oCNTs thin film coatings exhibited robust and long-term antibacterial activity against both Gram negative and Gram positive bacteria. Moreover, due to the shielding effects of polymer layers, the coatings showed extraordinary blood compatibility and limited toxicity against human umbilical vein endothelial cells. It is believed that the proposed large-scale fabrication of bactericidal, blood and cell compatible AgNPs@oCNT based thin film coatings will have great potential to forward novel operational pathogenic inhibition strategies to avoid undesired bacterial contaminations of biomedical implants or biological devices. STATEMENT OF SIGNIFICANCE Bacterial infection of medical devices has been considered to be a world-wide clinical threat towards patients' health. In this study, a bioinspired and biocompatible antibacterial coating was prepared via the spray-assisted layer-by-layer (LbL) assembly. The silver nanopartilces loaded oxidized carbon nanotube (AgNPs@oCNT), which were coated by functional polymers (chitosan and synthetic heparin mimicking polymers), were prepared via mussel inspired chemistry; and the spray-assisted assembly process allowed the fast construction on devices. Owing to the antibacterial efficiency of the loaded AgNPs, the coating showed robust bacterial killing activity and resistance towards bacterial adhesion. Moreover, since that the AgNPs were shielded by the polymers, the coating exhibited no clear toxicity at blood or cellular level. Benefiting from the universal and large-scale fabrication advancements of the spray assisted LbL coating; it is believed that the proposed strategy can be applied in designing many other kinds of self-sterilizing biomedical implants and devices.
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Li J, Wang X. Research Update: Materials design of implantable nanogenerators for biomechanical energy harvesting. APL MATERIALS 2017; 5:073801. [PMID: 29270331 PMCID: PMC5734651 DOI: 10.1063/1.4978936] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 03/07/2017] [Indexed: 05/22/2023]
Abstract
Implantable nanogenerators are rapidly advanced recently as a promising concept for harvesting biomechanical energy in vivo. This review article presents an overview of the most current progress of implantable piezoelectric nanogenerator (PENG) and triboelectric nanogenerator (TENG) with a focus on materials selection, engineering, and assembly. The evolution of the PENG materials is discussed from ZnO nanostructures, to high-performance ferroelectric perovskites, to flexible piezoelectric polymer mesostructures. Discussion of TENGs is focused on the materials and surface features of friction layers, encapsulation materials, and device integrations. Challenges faced by this promising technology and possible future research directions are also discussed.
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38
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An Z, Xu R, Dai F, Xue G, He X, Zhao Y, Chen L. PVDF/PVDF-g-PACMO blend hollow fiber membranes for hemodialysis: preparation, characterization, and performance. RSC Adv 2017. [DOI: 10.1039/c7ra03366d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A novel approach to improve the biocompatibility of PVDF hollow fiber membrane by blending PVDF-g-PACMO copolymer for hemodialysis is provided.
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Affiliation(s)
- Zihan An
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Rui Xu
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Fengying Dai
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Gaojian Xue
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Xiaoling He
- School of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Yiping Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
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39
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Okuji S, Kitazawa H, Takeda Y. Time of flight-secondary ion mass spectrometry analysis of protein adsorption on a polyvinylidene difluoride surface modified by ion irradiation. Colloids Surf B Biointerfaces 2016; 148:249-254. [PMID: 27616065 DOI: 10.1016/j.colsurfb.2016.08.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/21/2016] [Accepted: 08/18/2016] [Indexed: 10/21/2022]
Abstract
We investigated the effects of nanoscopic surface modification of polyvinylidene difluoride (PVDF) and low-density polyethylene (LDPE) by plasma-based ion implantation on protein adsorption with time of flight-secondary ion mass spectrometry (ToF-SIMS) analysis. The chemical composition of the LDPE and PVDF surfaces was changed by ion irradiation. In particular, irradiation substantially decreased the number of CH and CF bonds on the PVDF surface, but only slightly decreased that of CH bonds for LDPE. These decreases may reflect a higher hydrogen recombination rate of the LDPE than the PVDF surface. An increase in oxygen was observed on both the LDPE and PVDF surfaces following ion irradiation, but was saturated after irradiation of 1×1015cm-2 on the PVDF surface. The hydrophilicity of the ion-irradiated LDPE surface was promoted with an increase of the total ion fluence. Ion irradiation also changed the surface properties of PVDF to become more hydrophilic, but the variation did not correlate with the total ion fluence presumably due to the presence of fluorine atoms and the saturation of oxidation. Both bovine serum albumin (BSA) and collagen adsorption were suppressed on the LDPE surface by ion irradiation, which may have resulted from a decrease of the hydrophobic interaction. By contrast, ion irradiation increased protein adsorption on the PVDF surface, and BSA was adsorbed more than collagen, whereas there was no difference in the adsorption between BSA and collagen on the ion-irradiated LDPE surface. Moreover, the adsorption of BSA decreased on the oxygen- and fluorine-rich PVDF surface. These results indicate that the nanoscopic composition changes on the PVDF surface affect the adsorption behavior of BSA. Specifically, ferroelectric property on the PVDF surface was changed by ion irradiation and the nanoscopic change in polarity presumably affected the protein adsorption. Our findings suggest that selective adsorption control of protein can be achieved by ion irradiation to PVDF surface.
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Affiliation(s)
- Shigeto Okuji
- Lintec Corporation, 5-14-42 Nishiki-cho, Warabi, Saitama 335-0005, Japan; Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan; University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan.
| | - Hideaki Kitazawa
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Yoshihiko Takeda
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan; University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan.
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40
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Zhang Q, Lu X, Zhang Q, Zhang L, Li S, Liu S. Flux and Passage Enhancement in Hemodialysis by Incorporating Compound Additive into PVDF Polymer Matrix. MEMBRANES 2016; 6:membranes6040045. [PMID: 27775566 PMCID: PMC5192401 DOI: 10.3390/membranes6040045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/18/2016] [Accepted: 09/21/2016] [Indexed: 11/21/2022]
Abstract
In this study, Polyvinylidene fluoride (PVDF) hollow fiber hemodialysis membranes were prepared by non-solvent induced phase separation (NIPS) with compound addtive. The compound additive was made with polyvinyl pyrrolidone (PVP) and Poly ethylene glycol (PEG). The results showed that the modified PVDF membrane had better separation performance than virgin PVDF membrane. The UF flux of modified PVDF membrane can reach 684 L·h−1·m−2 and lysozyme (LZM) passage is 72.6% while virgin PVDF membrane is 313 L·h−1·m−2 and 53.2%. At the same time, the biocompatibility of PVDF membranes was also improved. Compared with commercial polysulfone hemodialysis membrane (Fresenius F60S membrane), the modified PVDF membrane had better mechanical and separation performance. The stress and tensile elongation of modified PVDF membrane was 0.94 MPa and 352% while Fresenius F60S membrane was 0.79 MPa and 59%. The LZM passage reached 72.6% while Fresenius F60S membrane was 54.4%. It was proven that the modified PVDF membrane showed better hydrophilicity, antithrombogenicity, less BSA adsorption, and lower hemolytic ratio and adhesion of platelets. Water contact angle and BSA adsorption of the modified PVDF membrane are 38° and 45 mg/m2 while Fresenius F60S membrane are 64° and 235 mg/m2. Prothrombin time (PT) and activated partial thromboplastin time (APTT) of the modified PVDF membrane are 56.5 s and 25.8 s while Fresenius F60S membrane is 35.7 s and 16.6 s. However, further biocompatibility evaluation is needed to obtain a more comprehensive conclusion.
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Affiliation(s)
- Qinglei Zhang
- Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
| | - Xiaolong Lu
- Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin 300387, China.
| | - Qingzhao Zhang
- Xintai Traditional Chinese Medical Hospital, Xintai 271200, China.
| | - Lei Zhang
- Xintai Second Peoples Hospital, Xintai 271219, China.
| | - Suoding Li
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
| | - Shaobin Liu
- Beijing Origin water membrane technology Co. Ltd., Beijing 101400, China.
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41
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Xu R, Feng Q, He Y, Yan F, Chen L, Zhao Y. Dual functionalized poly(vinylidene fluoride) membrane with acryloylmorpholine and argatroban to improve antifouling and hemocompatibility. J Biomed Mater Res A 2016; 105:178-188. [DOI: 10.1002/jbm.a.35892] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/17/2016] [Accepted: 08/30/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Rui Xu
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Material Science and Engineering, Tianjin Polytechnic University; Tianjin 300387 China
| | - Qianqian Feng
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Material Science and Engineering, Tianjin Polytechnic University; Tianjin 300387 China
| | - Yang He
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Material Science and Engineering, Tianjin Polytechnic University; Tianjin 300387 China
| | - Fanyong Yan
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Environmental and Chemical Engineering, Tianjin Polytechnic University; Tianjin 300387 China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Material Science and Engineering, Tianjin Polytechnic University; Tianjin 300387 China
- School of Material Science and Engineering; Tianjin University of Technology; Tianjin 300384 China
| | - Yiping Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes; School of Material Science and Engineering, Tianjin Polytechnic University; Tianjin 300387 China
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42
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Wang B, Ji J, Li K. Crystal nuclei templated nanostructured membranes prepared by solvent crystallization and polymer migration. Nat Commun 2016; 7:12804. [PMID: 27640994 PMCID: PMC5031797 DOI: 10.1038/ncomms12804] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/01/2016] [Indexed: 11/09/2022] Open
Abstract
Currently, production of porous polymeric membranes for filtration is predominated by the phase-separation process. However, this method has reached its technological limit, and there have been no significant breakthrough over the last decade. Here we show, using polyvinylidene fluoride as a sample polymer, a new concept of membrane manufacturing by combining oriented green solvent crystallization and polymer migration is able to obtain high performance membranes with pure water permeation flux substantially higher than those with similar pore size prepared by conventional phase-separation processes. The new manufacturing procedure is governed by fewer operating parameters and is, thus, easier to control with reproducible results. Apart from the high water permeation flux, the prepared membranes also show excellent stable flux after fouling and superior mechanical properties of high pressure load and better abrasion resistance. These findings demonstrate the promise of a new concept for green manufacturing nanostructured polymeric membranes with high performances.
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Affiliation(s)
- Bo Wang
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Jing Ji
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Kang Li
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
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43
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Lins LC, Wianny F, Livi S, Dehay C, Duchet-Rumeau J, Gérard JF. Effect of polyvinylidene fluoride electrospun fiber orientation on neural stem cell differentiation. J Biomed Mater Res B Appl Biomater 2016; 105:2376-2393. [PMID: 27571576 DOI: 10.1002/jbm.b.33778] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 06/29/2016] [Accepted: 08/14/2016] [Indexed: 12/17/2022]
Abstract
Electrospun polymer piezoelectric fibers can be used in neural tissue engineering (NTE) to mimic the physical, biological, and material properties of the native extracellular matrix. In this work, we have developed scaffolds based on polymer fiber architectures for application in NTE. To study the role of such three-dimensional scaffolds, a rotating drum collector was used for electrospinning poly(vinylidene) fluoride (PVDF) polymer at various rotation speeds. The morphology, orientation, polymorphism, as well as the mechanical behavior of the nonaligned and aligned fiber-based architectures were characterized. We have demonstrated that the jet flow and the electrostatic forces generated by electrospinning of PVDF induced local conformation changes which promote the generation of the β-phase. Fiber anisotropy could be a critical feature for the design of suitable scaffolds for NTEs. We thus assessed the impact of PVDF fiber alignment on the behavior of monkey neural stem cells (NSCs). NSCs were seeded on nonaligned and aligned scaffolds and their morphology, adhesion, and differentiation capacities into the neuronal and glial pathways were studied using microscopic techniques. Significant changes in the growth and differentiation capacities of NSCs into neuronal and glial cells as a function of the fiber alignment were evidenced. These results demonstrate that PVDF scaffolds may serve as instructive scaffolds for NSC survival and differentiation, and may be valuable tools for the development of cell- and scaffold-based strategies for neural repair. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2376-2393, 2017.
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Affiliation(s)
- Luanda C Lins
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Florence Wianny
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500, Bron, France
| | - Sebastien Livi
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Colette Dehay
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500, Bron, France
| | - Jannick Duchet-Rumeau
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Jean-François Gérard
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
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Szott LM, Irvin CA, Trollsas M, Hossainy S, Ratner BD. Blood compatibility assessment of polymers used in drug eluting stent coatings. Biointerphases 2016; 11:029806. [PMID: 27083991 PMCID: PMC5014517 DOI: 10.1116/1.4944586] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/29/2016] [Accepted: 03/03/2016] [Indexed: 11/17/2022] Open
Abstract
Differences in thrombosis rates have been observed clinically between different drug eluting stents. Such differences have been attributed to numerous factors, including stent design, injury created by the catheter delivery system, coating application technologies, and the degree of thrombogenicity of the polymer. The relative contributions of these factors are generally unknown. This work focuses on understanding the thrombogenicity of the polymer by examining mechanistic interactions with proteins, human platelets, and human monocytes of a number of polymers used in drug eluting stent coatings, in vitro. The importance for blood interactions of adsorbed albumin and the retention of albumin was suggested by the data. Microscopic imaging and immunostaining enhanced the interpretation of results from the lactate dehydrogenase cell counting assay and provided insight into platelet interactions, total quantification, and morphometry. In particular, highly spread platelets may be surface-passivating, possibly inhibiting ongoing thrombotic events. In many of the assays used here, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) showed a differentiated protein deposition pattern that may contribute to the explanation of the consistently thromboresistant blood-materials interaction for fluororpolymers cited in literature. These results are supportive of one of several possible factors contributing to the good thromboresistant clinical safety performance of PVDF-HFP coated drug eluting stents.
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Affiliation(s)
- Luisa Mayorga Szott
- Department of Bioengineering, University of Washington, Seattle, Washington 98195
| | - Colleen A Irvin
- Department of Bioengineering, University of Washington, Seattle, Washington 98195
| | - Mikael Trollsas
- Abbott Vascular, Innovation Incubator, Santa Clara, California 95052
| | - Syed Hossainy
- Abbott Vascular, Innovation Incubator, Santa Clara, California 95052
| | - Buddy D Ratner
- Department of Bioengineering, University of Washington, Seattle, Washington 98195 and Department of Chemical Engineering, University of Washington, Seattle, Washington 98195
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Zhao T, Jiang W, Liu H, Niu D, Li X, Liu W, Li X, Chen B, Shi Y, Yin L, Lu B. An infrared-driven flexible pyroelectric generator for non-contact energy harvester. NANOSCALE 2016; 8:8111-8117. [PMID: 27025660 DOI: 10.1039/c5nr09290f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In recent years, energy harvesting technologies, which can scavenge many kinds of energies from our living environment to power micro/nanodevices, have attracted increasing attention. However, remote energy transmission, flexibility and electric waveform controllability remain the key challenges for wireless power supply by an energy harvester. In this paper, we design a new infrared-driven non-contact pyroelectric generator for harvesting heat energy, which avoids direct contact between the pyroelectric generator and heat source and realizes remote energy transfer exploiting the photothermal and penetrability of infrared light. The output voltage (under the input impedance of 100 MOhm) and short-circuit current of the pyroelectric generator consisting of a CNT/PVDF/CNT layer (20 mm × 5 mm × 100 μm) can be as large as 1.2 V and 9 nA, respectively, under a 1.45 W cm(-2) near-infrared laser (808 nm). We also demonstrate the means by which the pyroelectric generator can modulate square waveforms with controllable periods through irradiation frequency, which is essential for signal sources and medical stimulators. The overshoot of square waveforms are in a range of 9.0%-13.1% with a rise time of 120 ms. The prepared pyroelectric generator can light a liquid crystal display (LCD) in a vacuum chamber from outside. This work paves the way for non-contact energy harvesting for some particular occasions where near-field energy control is not available.
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Affiliation(s)
- Tingting Zhao
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Weitao Jiang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Hongzhong Liu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Dong Niu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Xin Li
- Department of Microelectronics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Weihua Liu
- Department of Microelectronics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xuan Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Bangdao Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Yongsheng Shi
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Lei Yin
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Bingheng Lu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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46
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Suaste-Gómez E, Rodríguez-Roldán G, Reyes-Cruz H, Terán-Jiménez O. Developing an Ear Prosthesis Fabricated in Polyvinylidene Fluoride by a 3D Printer with Sensory Intrinsic Properties of Pressure and Temperature. SENSORS 2016; 16:s16030332. [PMID: 26959026 PMCID: PMC4813907 DOI: 10.3390/s16030332] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/18/2016] [Accepted: 02/29/2016] [Indexed: 12/03/2022]
Abstract
An ear prosthesis was designed in 3D computer graphics software and fabricated using a 3D printing process of polyvinylidene fluoride (PVDF) for use as a hearing aid. In addition, the prosthesis response to pressure and temperature was observed. Pyroelectric and piezoelectric properties of this ear prosthesis were investigated using an astable multivibrator circuit, as changes in PVDF permittivity were observed according to variations of pressure and temperature. The results show that this prosthesis is reliable for use under different conditions of pressure (0 Pa to 16,350 Pa) and temperature (2 °C to 90 °C). The experimental results show an almost linear and inversely proportional behavior between the stimuli of pressure and temperature with the frequency response. This 3D-printed ear prosthesis is a promising tool and has a great potentiality in the biomedical engineering field because of its ability to generate an electrical potential proportional to pressure and temperature, and it is the first time that such a device has been processed by the additive manufacturing process (3D printing). More work needs to be carried out to improve the performance, such as electrical stimulation of the nervous system, thereby extending the purpose of a prosthesis to the area of sensory perception.
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Affiliation(s)
- Ernesto Suaste-Gómez
- Department of Electrical Engineering, Section of Bioelectronics, Center for Research and Advanced Studies, CINVESTAV-IPN, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, D.F., Mexico.
| | - Grissel Rodríguez-Roldán
- Department of Electrical Engineering, Section of Bioelectronics, Center for Research and Advanced Studies, CINVESTAV-IPN, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, D.F., Mexico.
| | - Héctor Reyes-Cruz
- Department of Electrical Engineering, Section of Bioelectronics, Center for Research and Advanced Studies, CINVESTAV-IPN, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, D.F., Mexico.
| | - Omar Terán-Jiménez
- Department of Electrical Engineering, Section of Bioelectronics, Center for Research and Advanced Studies, CINVESTAV-IPN, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, D.F., Mexico.
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47
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Bagchi B, Banerjee S, Kool A, Thakur P, Bhandary S, Hoque NA, Das S. Synthesis of eucalyptus/tea tree oil absorbed biphasic calcium phosphate–PVDF polymer nanocomposite films: a surface active antimicrobial system for biomedical application. Phys Chem Chem Phys 2016; 18:16775-85. [DOI: 10.1039/c6cp03493d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A biocompatible poly(vinylidene) difluoride (PVDF) based film has been prepared by in situ precipitation of calcium phosphate precursors.
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Affiliation(s)
| | | | - Arpan Kool
- Physics Department
- Jadavpur University
- Kolkata 700032
- India
| | - Pradip Thakur
- Physics Department
- Jadavpur University
- Kolkata 700032
- India
- Department of Physics
| | - Suman Bhandary
- Division of Molecular Medicine
- Bose Institute
- Kolkata 700054
- India
| | - Nur Amin Hoque
- Physics Department
- Jadavpur University
- Kolkata 700032
- India
| | - Sukhen Das
- Physics Department
- Jadavpur University
- Kolkata 700032
- India
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48
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Todros S, Pavan PG, Natali AN. Synthetic surgical meshes used in abdominal wall surgery: Part I-materials and structural conformation. J Biomed Mater Res B Appl Biomater 2015; 105:689-699. [PMID: 26671827 DOI: 10.1002/jbm.b.33586] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/26/2015] [Accepted: 11/18/2015] [Indexed: 01/08/2023]
Abstract
Surgical implants are commonly used in abdominal wall surgery for hernia repair. Many different prostheses are currently offered to surgeons, comprising permanent synthetic polymer meshes and biologic scaffolds. There is a wide range of synthetic meshes currently available on the market with differing chemical compositions, fiber conformations, and mesh textures. These chemical and structural characteristics determine a specific biochemical and mechanical behavior and play a crucial role in guaranteeing a successful post-operative outcome. Although an increasing number of studies report on the structural and mechanical properties of synthetic surgical meshes, nowadays there are no consistent guidelines for the evaluation of mechanical biocompatibility or common criteria for the selection of prostheses. The aim of this work is to review synthetic meshes by considering the extensive bibliography documentation of their use in abdominal wall surgery, taking into account their material and structural properties, in Part I, and their mechanical behavior, in Part II. The main materials available for the manufacture of polymeric meshes are described, including references to their chemical composition, fiber conformation, and textile structural properties. These characteristics are decisive for the evaluation of mesh-tissue interaction process, including foreign body response, mesh encapsulation, infection, and adhesion formation. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 689-699, 2017.
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Affiliation(s)
- S Todros
- Department of Industrial Engineering, Centre for Mechanics of Biological Materials, University of Padova, Padova, Italy
| | - P G Pavan
- Department of Industrial Engineering, Centre for Mechanics of Biological Materials, University of Padova, Padova, Italy
| | - A N Natali
- Department of Industrial Engineering, Centre for Mechanics of Biological Materials, University of Padova, Padova, Italy
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49
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Medeiros AS, Gual MR, Pereira C, Faria LO. Thermal analysis for study of the gamma radiation effects in poly(vinylidene fluoride). Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2015.05.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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He T, Wang J, Huang P, Zeng B, Li H, Cao Q, Zhang S, Luo Z, Deng DY, Zhang H, Zhou W. Electrospinning polyvinylidene fluoride fibrous membranes containing anti-bacterial drugs used as wound dressing. Colloids Surf B Biointerfaces 2015; 130:278-86. [DOI: 10.1016/j.colsurfb.2015.04.026] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/30/2015] [Accepted: 04/12/2015] [Indexed: 11/15/2022]
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