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Yang J, Fei T, Zhang W, Cong X. Tannic Acid and Ca 2+ Double-Crosslinked Alginate Films for Passion Fruit Preservation. Foods 2023; 12:3936. [PMID: 37959055 PMCID: PMC10650026 DOI: 10.3390/foods12213936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
In this study, the interaction of different concentrations of tannic acid (TA) (10%, 20%, and 30% w/w) and Ca2+ with alginate (SA) was utilized to create double-crosslinked SA films. The resulting films were evaluated for their optical, mechanical, water resistance, and barrier properties, and their microstructure and intermolecular interactions were also characterized. The SA films containing 20% TA showed the best mechanical properties, with an observed increase in tensile strength of 22.54%. In terms of water vapor permeability, the SA film containing 30% TA exhibited the highest barrier property, which was 25.36% higher than that of the pure SA film. Moreover, TA demonstrated a strong UV absorption ability, resulting in a nearly 0% UV transmittance of the SA film at 280 nm. It can be seen that SA films containing 20% TA have excellent barrier and mechanical properties, and the development of such films will be applied to the storage and packaging of fresh food. It is worth noting that this work also investigated the effect of SA coatings containing different concentrations of TA on the preservation of passion fruits for 7 days. The results revealed that passion fruits treated with SA coatings containing a 30% TA concentration maintained a better appearance on the 7th day and had the lowest weight loss and crumpling indices of approximately 8.98% and 2.17, respectively, compared to the other treatment groups. Therefore, based on the overall results, the addition of 30% TA to SA coatings proved to be more effective and can be considered a promising approach for delaying fruit senescence and decay.
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Affiliation(s)
- Jun Yang
- School of Life Sciences, Hainan University, Haikou 570228, China;
- School of Food Science and Engineering, Hainan University, Haikou 570228, China; (T.F.); (W.Z.)
| | - Tao Fei
- School of Food Science and Engineering, Hainan University, Haikou 570228, China; (T.F.); (W.Z.)
| | - Wanli Zhang
- School of Food Science and Engineering, Hainan University, Haikou 570228, China; (T.F.); (W.Z.)
| | - Xinli Cong
- School of Life Sciences, Hainan University, Haikou 570228, China;
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2
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Fabrication and Characterization of Electrospun Poly(Caprolactone)/Tannic Acid Scaffold as an Antibacterial Wound Dressing. Polymers (Basel) 2023; 15:polym15030593. [PMID: 36771894 PMCID: PMC9921954 DOI: 10.3390/polym15030593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023] Open
Abstract
Antibacterial wound dressings are promising materials to treat infected skin wounds, which greatly affect the wound-healing process. In this study, tannic acid (TA), a natural antibacterial agent, was successfully loaded by electrospinning into poly(caprolactone) (PCL) fibers in a high concentration. It is suggested that the addition of TA was beneficial for producing uniform and continuous PCL nanofibers. Hydrogen bonds existed between the PCL and TA molecules based on the analysis of FTIR spectra and DSC results. The interactions and continuous network improved the mechanical properties of the scaffolds. Meanwhile, increasing the amount of TA also enhanced the hydrophilicity and water absorption capacity of the scaffold, both of which are beneficial for accelerating wound healing. Moreover, a burst release of the TA in the initial stage and a controlled, steady release behavior over time contributed to the highly antibacterial properties of the PCL/TA scaffolds. The fabrication of the composite scaffold supplies a facile, efficient, and controllable approach to address the issue of antibacterial treatment in wound dressing.
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Jafari H, Ghaffari-Bohlouli P, Niknezhad SV, Abedi A, Izadifar Z, Mohammadinejad R, Varma RS, Shavandi A. Tannic acid: a versatile polyphenol for design of biomedical hydrogels. J Mater Chem B 2022; 10:5873-5912. [PMID: 35880440 DOI: 10.1039/d2tb01056a] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Tannic acid (TA), a natural polyphenol, is a hydrolysable amphiphilic tannin derivative of gallic acid with several galloyl groups in its structure. Tannic acid interacts with various organic, inorganic, hydrophilic, and hydrophobic materials such as proteins and polysaccharides via hydrogen bonding, electrostatic, coordinative bonding, and hydrophobic interactions. Tannic acid has been studied for various biomedical applications as a natural crosslinker with anti-inflammatory, antibacterial, and anticancer activities. In this review, we focus on TA-based hydrogels for biomaterials engineering to help biomaterials scientists and engineers better realize TA's potential in the design and fabrication of novel hydrogel biomaterials. The interactions of TA with various natural or synthetic compounds are deliberated, discussing parameters that affect TA-material interactions thus providing a fundamental set of criteria for utilizing TA in hydrogels for tissue healing and regeneration. The review also discusses the merits and demerits of using TA in developing hydrogels either through direct incorporation in the hydrogel formulation or indirectly via immersing the final product in a TA solution. In general, TA is a natural bioactive molecule with diverse potential for engineering biomedical hydrogels.
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Affiliation(s)
- Hafez Jafari
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
| | - Pejman Ghaffari-Bohlouli
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
| | - Seyyed Vahid Niknezhad
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, 71345-1978, Iran
| | - Ali Abedi
- Department of Life Science Engineering, Faculty of New Sciences and Technology, University of Tehran, Tehran, Iran
| | - Zohreh Izadifar
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Reza Mohammadinejad
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Šlechtitelů 27, 783 71, Olomouc, Czech Republic.
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
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4
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Du C, Fikhman DA, Monroe MBB. Shape Memory Polymer Foams with Phenolic Acid-Based Antioxidant Properties. Antioxidants (Basel) 2022; 11:antiox11061105. [PMID: 35740002 PMCID: PMC9219628 DOI: 10.3390/antiox11061105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 02/04/2023] Open
Abstract
Phenolic acids (PAs) are natural antioxidant agents in the plant kingdom that are part of the human diet. The introduction of naturally occurring PAs into the network of synthetic shape memory polymer (SMP) polyurethane (PU) foams during foam fabrication can impart antioxidant properties to the resulting scaffolds. In previous work, PA-containing SMP foams were synthesized to provide materials that retained the desirable shape memory properties of SMP PU foams with additional antimicrobial properties that were derived from PAs. Here, we explore the impact of PA incorporation on SMP foam antioxidant properties. We investigated the antioxidant effects of PA-containing SMP foams in terms of in vitro oxidative degradation resistance and cellular antioxidant activity. The PA foams showed surprising variability; p-coumaric acid (PCA)-based SMP foams exhibited the most potent antioxidant properties in terms of slowing oxidative degradation in H2O2. However, PCA foams did not effectively reduce reactive oxygen species (ROS) in short-term cellular assays. Vanillic acid (VA)- and ferulic acid (FA)-based SMP foams slowed oxidative degradation in H2O2 to lesser extents than the PCA foams, but they demonstrated higher capabilities for scavenging ROS to alter cellular activity. All PA foams exhibited a continuous release of PAs over two weeks. Based on these results, we hypothesize that PAs must be released from SMP foams to provide adequate antioxidant properties; slower release may enable higher resistance to long-term oxidative degradation, and faster release may result in higher cellular antioxidant effects. Overall, PCA, VA, and FA foams provide a new tool for tuning oxidative degradation rates and extending potential foam lifetime in the wound. VA and FA foams induced cellular antioxidant activity that could help promote wound healing by scavenging ROS and protecting cells. This work could contribute a wound dressing material that safely releases antimicrobial and antioxidant PAs into the wound at a continuous rate to ideally improve healing outcomes. Furthermore, this methodology could be applied to other oxidatively degradable biomaterial systems to enhance control over degradation rates and to provide multifunctional scaffolds for healing.
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Lamei E, Hasanzadeh M. Fabrication of chitosan nanofibrous scaffolds based on tannic acid and metal-organic frameworks for hemostatic wound dressing applications. Int J Biol Macromol 2022; 208:409-420. [PMID: 35339500 DOI: 10.1016/j.ijbiomac.2022.03.117] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 12/14/2022]
Abstract
Here, we developed chitosan (CS)-based nanofibrous scaffold consisting of tannic acid (TA) and zinc-based metal-organic framework (MOF) as a novel antibacterial and hemostatic wound dressing. The effect of MOF content and its incorporation within and onto CS/PVA-TA nanofibrous scaffolds were studied. The morphological characterization of fabricated nanofibrous scaffolds revealed the formation of uniform and bead-free nanofibers with an average diameter between 120 and 150 nm. The uniform and continuous decoration of MOF crystals on nanofibrous scaffold surfaces were confirmed by FESEM. The developed nanofibrous scaffolds exhibit appropriate physicochemical characteristics such as chemical and crystalline structure, surface wettability and swelling, and mechanical properties. It is shown that the incorporation of TA and MOFs greatly enhanced the hemostatic performance of the CS/PVA nanofibrous scaffold by providing rapid liquid absorbability and accelerating the aggregation of coagulation factors and platelets. Furthermore, the results of the MTT assay suggested the good biocompatibility of nanofibrous scaffolds containing MOF nanoparticles. The nanofibrous scaffolds exhibited excellent antibacterial activity against Escherichia coli and Staphylococcus aureus. The disk diffusion antibacterial assay showed that the nanofibrous scaffolds containing TA and MOF could protect wound from bacterial infection. The findings provide new insights to develop a MOF-modified nanofibrous structure with great potential for hemostatic wound dressing application.
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Affiliation(s)
- Elnaz Lamei
- Department of Textile Engineering, Yazd University, P.O. Box 89195-741, Yazd, Iran
| | - Mahdi Hasanzadeh
- Department of Textile Engineering, Yazd University, P.O. Box 89195-741, Yazd, Iran.
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Madruga LYC, Kipper MJ. Expanding the Repertoire of Electrospinning: New and Emerging Biopolymers, Techniques, and Applications. Adv Healthc Mater 2022; 11:e2101979. [PMID: 34788898 DOI: 10.1002/adhm.202101979] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/09/2021] [Indexed: 12/20/2022]
Abstract
Electrospinning has emerged as a versatile and accessible technology for fabricating polymer fibers, particularly for biological applications. Natural polymers or biopolymers (including synthetically derivatized natural polymers) represent a promising alternative to synthetic polymers, as materials for electrospinning. Many biopolymers are obtained from abundant renewable sources, are biodegradable, and possess inherent biological functions. This review surveys recent literature reporting new fibers produced from emerging biopolymers, highlighting recent developments in the use of sulfated polymers (including carrageenans and glycosaminoglycans), tannin derivatives (condensed and hydrolyzed tannins, tannic acid), modified collagen, and extracellular matrix extracts. The proposed advantages of these biopolymer-based fibers, focusing on their biomedical applications, are also discussed to highlight the use of new and emerging biopolymers (or new modifications to well-established ones) to enhance or achieve new properties for electrospun fiber materials.
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Affiliation(s)
- Liszt Y. C. Madruga
- Department of Chemical and Biological Engineering Colorado State University Fort Collins CO 80526 USA
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering Colorado State University Fort Collins CO 80526 USA
- School of Advanced Materials Discovery Colorado State University Fort Collins CO 80526 USA
- School of Biomedical Engineering Colorado State University Fort Collins CO 80526 USA
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7
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Brito J, Hlushko H, Abbott A, Aliakseyeu A, Hlushko R, Sukhishvili SA. Integrating Antioxidant Functionality into Polymer Materials: Fundamentals, Strategies, and Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:41372-41395. [PMID: 34448558 DOI: 10.1021/acsami.1c08061] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
While antioxidants are widely known as natural components of healthy food and drinks or as additives to commercial polymer materials to prevent their degradation, recent years have seen increasing interest in enhancing the antioxidant functionality of newly developed polymer materials and coatings. This paper provides a critical overview and comparative analysis of multiple ways of integrating antioxidants within diverse polymer materials, including bulk films, electrospun fibers, and self-assembled coatings. Polyphenolic antioxidant moieties with varied molecular architecture are in the focus of this Review, because of their abundance, nontoxic nature, and potent antioxidant activity. Polymer materials with integrated polyphenolic functionality offer opportunities and challenges that span from the fundamentals to their applications. In addition to the traditional blending of antioxidants with polymer materials, developments in surface grafting and assembly via noncovalent interaction for controlling localization versus migration of antioxidant molecules are discussed. The versatile chemistry of polyphenolic antioxidants offers numerous possibilities for programmed inclusion of these molecules in polymer materials using not only van der Waals interactions or covalent tethering to polymers, but also via their hydrogen-bonding assembly with neutral molecules. An understanding and rational use of interactions of polyphenol moieties with surrounding molecules can enable precise control of concentration and retention versus delivery rate of antioxidants in polymer materials that are critical in food packaging, biomedical, and environmental applications.
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Affiliation(s)
- Jordan Brito
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Hanna Hlushko
- Notre Dame Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ashleigh Abbott
- Department of Materials Science & Engineering, Missouri University of Science & Technology, Rolla, Missouri 65409, United States
| | - Aliaksei Aliakseyeu
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Raman Hlushko
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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8
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Koopmann AK, Schuster C, Torres-Rodríguez J, Kain S, Pertl-Obermeyer H, Petutschnigg A, Hüsing N. Tannin-Based Hybrid Materials and Their Applications: A Review. Molecules 2020; 25:E4910. [PMID: 33114152 PMCID: PMC7660623 DOI: 10.3390/molecules25214910] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 12/29/2022] Open
Abstract
Tannins are eco-friendly, bio-sourced, natural, and highly reactive polyphenols. In the past decades, the understanding of their versatile properties has grown substantially alongside a continuously broadening of the tannins' application scope. In particular, recently, tannins have been increasingly investigated for their interaction with other species in order to obtain tannin-based hybrid systems that feature advanced and/or novel properties. Furthermore, in virtue of the tannins' chemistry and their high reactivity, they either physicochemically or physically interact with a wide variety of different compounds, including metals and ceramics, as well as a number of organic species. Such hybrid or hybrid-like systems allow the preparation of various advanced nanomaterials, featuring improved performances compared to the current ones. Consequently, these diverse-shaped materials have potential use in wastewater treatment or catalysis, as well as in some novel fields such as UV-shielding, functional food packaging, and biomedicine. Since these kinds of tannin-based hybrids represent an emerging field, thus far no comprehensive overview concerning their potential as functional chemical building blocks is available. Hence, this review aims to provide a structured summary of the current state of research regarding tannin-based hybrids, detailed findings on the chemical mechanisms as well as their fields of application.
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Affiliation(s)
- Ann-Kathrin Koopmann
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Department of Chemistry and Physics of Materials, Paris-Lodron-University Salzburg, Jakob-Haringer-Straße 2A, 5020 Salzburg, Austria
| | - Christian Schuster
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Department of Chemistry and Physics of Materials, Paris-Lodron-University Salzburg, Jakob-Haringer-Straße 2A, 5020 Salzburg, Austria
| | - Jorge Torres-Rodríguez
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Department of Chemistry and Physics of Materials, Paris-Lodron-University Salzburg, Jakob-Haringer-Straße 2A, 5020 Salzburg, Austria
| | - Stefan Kain
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Forest Products Technology & Timber Constructions Department, Salzburg University of Applied Sciences, Markt 136a, 5431 Kuchl, Austria
| | - Heidi Pertl-Obermeyer
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Department of Chemistry and Physics of Materials, Paris-Lodron-University Salzburg, Jakob-Haringer-Straße 2A, 5020 Salzburg, Austria
- Forest Products Technology & Timber Constructions Department, Salzburg University of Applied Sciences, Markt 136a, 5431 Kuchl, Austria
| | - Alexander Petutschnigg
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Forest Products Technology & Timber Constructions Department, Salzburg University of Applied Sciences, Markt 136a, 5431 Kuchl, Austria
| | - Nicola Hüsing
- Salzburg Center for Smart Materials, Jakob-Haringer-Straße 2a, 5020 Salzburg, Austria; (A.-K.K.); (C.S.); (J.T.-R.); (S.K.); (H.P.-O.); (A.P.)
- Department of Chemistry and Physics of Materials, Paris-Lodron-University Salzburg, Jakob-Haringer-Straße 2A, 5020 Salzburg, Austria
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Gaikwad A, Hlushko H, Karimineghlani P, Selin V, Sukhishvili SA. Hydrogen-Bonded, Mechanically Strong Nanofibers with Tunable Antioxidant Activity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11026-11035. [PMID: 32048504 DOI: 10.1021/acsami.9b23212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report on mechanically strong, water-insoluble hydrogen-bonded nanofiber mats composed of a hydrophilic polymer and a natural polyphenol that exhibit prolonged antioxidant activity. The high performance of fibrous mats resulted from the formation of a network of hydrogen bonds between a low-molecular-weight polyphenol (tannic acid, TA) and a water-soluble polymer (polyvinylpyrrolidone, PVP) and could be precisely controlled by the TA-to-PVP ratio. Dramatic enhancement (5- to 10-fold) in tensile strength, toughness, and Young's moduli of the PVP/TA fiber mats (as compared to those of pristine PVP fibers) was achieved at the maximum density of hydrogen bonds, which occurred at ∼0.2-0.4 molar fractions of TA. The formation of hydrogen bonds was confirmed by an increase in the glass-transition temperature of the polymer after binding with TA. When exposed to water, the fibers exhibited composition- and pH-dependent stabilities, with the TA-enriched fibers fully preserving their integrity in acidic and neutral media. Importantly, the fiber mats exhibited strong antioxidant activity with dual (burst and prolonged) activity profiles, which could be controlled via fiber composition, a feature useful for controlling radical-scavenging rates in environmental and biological applications.
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Affiliation(s)
- Adwait Gaikwad
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Hanna Hlushko
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Parvin Karimineghlani
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Victor Selin
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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10
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Rosso AP, Martinelli M. Preparation and characterization of dendronized chitosan/gelatin-based nanogels. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109506] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Peng J, Tang D, Lv H, Wang N, Yang X, Sun Z, Yu Z. Thermal phase transition of poly(N-vinyl caprolactam)-based copolymers: the distribution of hydrophilic units within polymeric chains. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04537-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Malpani D, Majumder A, Samanta P, Srivastava RK, Nandan B. Supramolecular Route for Enhancing Polymer Electrospinnability. ACS OMEGA 2018; 3:15666-15678. [PMID: 31458222 PMCID: PMC6643600 DOI: 10.1021/acsomega.8b02029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/29/2018] [Indexed: 06/10/2023]
Abstract
Electrospinning of polymers typically requires high solution concentrations necessitated by the requirement of sufficient chain overlaps to achieve the required viscoelastic properties. Here, we report on a novel supramolecular approach, involving polymer/surfactant complexes, which allows for a significant reduction in the solution concentration of polymer for electrospinning. The approach involved supramolecular complexation of poly(4-vinylpyridine) (P4VP) with a surfactant, dodecylbenzenesulfonic acid (DBSA), via ionic interactions. The supramolecular complexation of P4VP with DBSA led to a significant increase in the solution viscosity even at a DBSA/4VP molar ratio as low as 0.05. Furthermore, the solution viscosity of the P4VP/DBSA complex increased significantly with the DBSA/4VP molar ratio. The increase in the viscosity for the P4VP/DBSA complexes was plausibly due to the formation of physical cross-links between P4VP chains driven by hydrophobic interactions between the surfactant tails. The formation of such physical cross-links led to a significant decrease in the solution concentration needed for the onset of semidilute entangled regime. Thus, the P4VP/DBSA complexes could be electrospun at a much lower concentration. The critical solution concentration to obtain bead-free uniform nanofibers of P4VP/DBSA complexes in dimethylformamide was reduced to 12% (w/v), which was not possible for neat P4VP solution even up to approximately 35% (w/v). Furthermore, small-angle X-ray scattering and polarized optical microscopy results revealed that the electrospun nanofibers of P4VP/DBSA complexes self-assembled in lamellar mesomorphic structures similar to that observed in bulk. However, the electrospun nanofibers exhibited significantly improved lamellar order, which was plausibly facilitated by the preferred orientation of P4VP chains along the fiber axis.
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13
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Reitzer F, Allais M, Ball V, Meyer F. Polyphenols at interfaces. Adv Colloid Interface Sci 2018; 257:31-41. [PMID: 29937230 DOI: 10.1016/j.cis.2018.06.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/03/2018] [Accepted: 06/05/2018] [Indexed: 12/18/2022]
Abstract
Polyphenols are important molecules in living organisms, particularly in plants, where they serve as protectants against predators. They are also of fundamental importance in pharmacology for their antioxidant and antibacterial activities. Since a few years polyphenols are also used in surface functionalization mimicking the tannin deposition observed when tea or red wine are in contact with the surface of cups or glasses respectively. The interaction of polyphenols with proteins to yield colloids and of polyphenol with surfaces will be reviewed in this article to provide an overview of such particles and surface functionalization methods in modern surface science. Particular emphasis will be given to biological applications of polyphenols at interfaces.
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Affiliation(s)
- François Reitzer
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France
| | - Manon Allais
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France
| | - Vincent Ball
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France.
| | - Florent Meyer
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France
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14
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Li T, Zhang C, Xie Z, Xu J, Guo BH. A multi-scale investigation on effects of hydrogen bonding on micro-structure and macro-properties in a polyurea. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.05.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Allais M, Mailley D, Hébraud P, Ihiawakrim D, Ball V, Meyer F, Hébraud A, Schlatter G. Polymer-free electrospinning of tannic acid and cross-linking in water for hybrid supramolecular nanofibres. NANOSCALE 2018; 10:9164-9173. [PMID: 29725685 DOI: 10.1039/c8nr01067f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Electrospinning is the process of choice allowing the preparation of nanofibrous materials from a solution usually based on a high molar mass polymer. The solution must bring enough chain entanglements to avoid any breaking or Rayleigh instability of the electrospun jet resulting thus in the deposition of a continuous and regular solid nanofibre. It has been however shown that some few non-polymeric molecules can be electrospun without using a carrier polymer. We demonstrate here the case of tannic acid. Indeed, it was possible to electrospin this molecule solubilised in a mixture of water and ethanol as well as in pure water. Rheology, dynamic light scattering and cryo-TEM highlight the formation of tannic acid aggregates in solution. Above a critical concentration, these aggregates form a supramolecular interconnected network strong enough to allow the electrospinning of a continuous and regular nanofibre. The resulting nanoweb is mechanically stable and can be handled and wrapped. Furthermore, as opposed to the other small molecules for which polymer-free electrospinning was also demonstrated, tannic acid nanowebs can be efficiently cross-linked in water either by oxidative reaction with sodium periodate or, most interestingly, with FeIII by a combination of oxidative reaction and the formation of coordination complexes. The proposed electrospinning and cross-linking strategy is easy, of low cost, and scalable and uses non-toxic solvents as well as biocompatible and biofunctional molecules. Furthermore, thanks to the chelation capacity of tannic acid having the ability to coordinate with a wide variety of metals, hybrid smart nanowebs can be envisaged for diverse applications such as biomedical, catalysis as well as environment.
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Affiliation(s)
- Manon Allais
- Institut National de la Santé et de la Recherche Médicale, Unité mixte de Recherche 1121, 11 rue Humann, 67085 Strasbourg Cedex, France
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López CM, Pich A. Supramolecular Stimuli-Responsive Microgels Crosslinked by Tannic Acid. Macromol Rapid Commun 2018; 39:e1700808. [DOI: 10.1002/marc.201700808] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/04/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Catalina Molano López
- DWI-Leibniz Institute for Interactive Materials e.V.; Forckenbeckstraße 50 D-52056 Aachen Germany
- Functional and Interactive Polymers; Institute of Technical and Macromolecular Chemistry; RWTH Aachen University; Forckenbeckstraße 50 D-52074 Aachen Germany
| | - Andrij Pich
- DWI-Leibniz Institute for Interactive Materials e.V.; Forckenbeckstraße 50 D-52056 Aachen Germany
- Functional and Interactive Polymers; Institute of Technical and Macromolecular Chemistry; RWTH Aachen University; Forckenbeckstraße 50 D-52074 Aachen Germany
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Yang W, Sundaram HS, Ella JR, He N, Jiang S. Low-fouling electrospun PLLA films modified with zwitterionic poly(sulfobetaine methacrylate)-catechol conjugates. Acta Biomater 2016; 40:92-99. [PMID: 27265149 DOI: 10.1016/j.actbio.2016.05.035] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/21/2016] [Accepted: 05/24/2016] [Indexed: 10/21/2022]
Abstract
UNLABELLED In this work, we modified a hydrophobic electrospun poly (l-lactic) acid (PLLA) film with poly (sulfobetaine methacrylate) (pSBMA)-catechol conjugates of different molecular weights to improve the biocompatibility of the film. These conjugates were synthesized via atom transfer radical polymerization. They consist of an ultra-low fouling pSBMA zwitterionic polymer with a surface-adhesive catechol moiety. X-ray photoelectron spectroscopy, contact angle and scanning electron microscopy experiments were performed to characterize films before and after modification with pSBMA-catechol conjugates. Enzyme-linked immunosorbent and fluorescently-labeled bovine serum albumin were used to study the interactions of proteins with these films. Results showed that low molecular weight zwitterionic pSBMA-catechol conjugates greatly discouraged protein adsorption as shown by use of single protein solutions on PLLA films when the modification was performed in ethanolic Tris-HCl solution. This work offers a convenient and effective method to modify electrospun PLLA films for biomedical applications. STATEMENT OF SIGNIFICANCE In this work, we report a convenient and effective method to modify electrospun PLLA films using pSBMA-catechol conjugates via "graft-to" for biomedical applications. After pSBMA modification, the PLLA surface becomes hydrophilic with low contact angle and protein adsorption. Results showed that lower molecular weight zwitterionic pSBMA-catechol conjugate led to lower contact angles and better nonfouling properties on PLLA films when the coating was performed in a solution containing ethanol.
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