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Diederichs EV, Mondal D, Patil H, Gorbet M, Willett TL. The effect of triglycerol diacrylate on the printability and properties of UV curable, bio-based nanohydroxyapatite composites. J Mech Behav Biomed Mater 2024; 153:106499. [PMID: 38490049 DOI: 10.1016/j.jmbbm.2024.106499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 03/17/2024]
Abstract
3D printable biopolymer nanocomposites composed of hydroxyapatite nanoparticles and functionalized plant-based monomers demonstrate potential as sustainable and structural biomaterials. To increase this potential, their printability and performance must be improved. For extrusion-based 3D printing, such as Direct Ink Writing (DIW), printability is important for print fidelity. In this work, triglycerol diacrylate (TGDA) was added to an acrylated epoxidized soybean oil:polyethylene glycol diacrylate resin to increase hydrogen bonding. Greater hydrogen bonding was hypothesized to improve printability by increasing the ink's shear yield strength, and therefore shape holding after deposition. The effects of this additive on material and mechanical properties were quantified. Increased hydrogen bonding due to TGDA content increased the ink's shear yield stress and viscosity by 916% and 27.6%, respectively. This resulted in improved printability, with best performance at 3 vol% TGDA. This composition achieved an ultimate tensile strength (UTS) of 32.4 ± 2.1 MPa and elastic modulus of 1.15 ± 0.21 GPa. These were increased from the 0 vol% TGDA composite, which had an UTS of 24.8 ± 1.8 MPa and a modulus of 0.88 ± 0.06 GPa. This study demonstrates the development of bio-based additive manufacturing feedstocks for potential uses in sustainable manufacturing, rapid prototyping, and biomaterial applications.
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Affiliation(s)
- Elizabeth V Diederichs
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Dibakar Mondal
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Haresh Patil
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada
| | - Maud Gorbet
- Material Interaction with Biological Systems Laboratory, Department of Systems Design, University of Waterloo, Carl A. Pollock Hall, 200 University Avenue West, Waterloo, Canada
| | - Thomas L Willett
- Composite Biomaterial Systems Laboratory, Department of Systems Design, University of Waterloo, Douglas Wright Engineering Building, 200 University Avenue West, Waterloo, Canada.
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Xu L, Zhou X, Zhao F, Fu Y, Tang L, Zeng Y, Chen G, Wu C, Wang L, Chen Q, Yang K, Sun D, Hai Z. Rapid laser fabrication of indium tin oxide and polymer-derived ceramic composite thin films for high-temperature sensors. J Colloid Interface Sci 2024; 658:913-922. [PMID: 38157615 DOI: 10.1016/j.jcis.2023.12.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/29/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Thin-film sensors are essential for real-time monitoring of components in high-temperature environments. Traditional fabrication methods often involve complicated fabrication steps or require prolonged high-temperature annealing, limiting their practical applicability. Here, we present an approach using direct ink writing and laser scanning (DIW-LS) to fabricate high-temperature functional thin films. An indium tin oxide (ITO)/preceramic polymer (PP) ink suitable for DIW was developed. Under LS, the ITO/PP thin film shrank in volume. Meanwhile, the rapid pyrolysis of PP into amorphous precursor-derived ceramic (PDC) facilitated the faster sintering of ITO nanoparticles and improved the densification of the thin film. This process realized the formation of a conductive network of interconnected ITO nanoparticles. The results show that the ITO/PDC thin film exhibits excellent stability, with a drift rate of 4.7 % at 1000 °C for 25 h, and withstands temperatures up to 1250 °C in the ambient atmosphere. It is also sensitive to strain, with a maximum gauge factor of -6.0. As a proof of concept, we have used DIW-LS technology to fabricate a thin-film heat flux sensor on the surface of the turbine blade, capable of measuring heat flux densities over 1 MW/m2. This DIW-LS process provides a viable approach for the integrated, rapid, and flexible fabrication of thin film sensors for harsh environments.
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Affiliation(s)
- Lida Xu
- Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China; Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Xiong Zhou
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Fuxin Zhao
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Yanzhang Fu
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Lantian Tang
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Yingjun Zeng
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Guochun Chen
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Chao Wu
- Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Lingyun Wang
- Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China; Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Qinnan Chen
- Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China; Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China
| | - Kai Yang
- China Aerodynamics Research and Development Center, Mianyang 621000, China.
| | - Daoheng Sun
- Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China; Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China.
| | - Zhenyin Hai
- Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China; Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361102, China; Fujian Micro/nano Manufacturing Engineering Technology Research Center, Xiamen University, Xiamen 361102, China.
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Baniasadi H, Abidnejad R, Fazeli M, Lipponen J, Niskanen J, Kontturi E, Seppälä J, Rojas OJ. Innovations in hydrogel-based manufacturing: A comprehensive review of direct ink writing technique for biomedical applications. Adv Colloid Interface Sci 2024; 324:103095. [PMID: 38301316 DOI: 10.1016/j.cis.2024.103095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
Direct ink writing (DIW) stands as a pioneering additive manufacturing technique that holds transformative potential in the field of hydrogel fabrication. This innovative approach allows for the precise deposition of hydrogel inks layer by layer, creating complex three-dimensional structures with tailored shapes, sizes, and functionalities. By harnessing the versatility of hydrogels, DIW opens up possibilities for applications spanning from tissue engineering to soft robotics and wearable devices. This comprehensive review investigates DIW as applied to hydrogels and its multifaceted applications. The paper introduces a diverse range of printing techniques while providing a thorough exploration of DIW for hydrogel-based printing. The investigation aims to explain the progress made, challenges faced, and potential trajectories that lie ahead for DIW in hydrogel-based manufacturing. The fundamental principles underlying DIW are carefully examined, specifically focusing on rheological attributes and printing parameters, prompting a comprehensive survey of the wide variety of hydrogel materials. These encompass both natural and synthetic variations, all of which can be effectively harnessed for this purpose. Furthermore, the review explores the latest applications of DIW for hydrogels in biomedical areas, with a primary focus on tissue engineering, wound dressing, and drug delivery systems. The document not only consolidates the existing state of DIW within the context of hydrogel-based manufacturing but also charts potential avenues for further research and innovative breakthroughs.
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Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo, Finland.
| | - Roozbeh Abidnejad
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Aalto FI-00076, Finland
| | - Mahyar Fazeli
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Aalto FI-00076, Finland
| | - Juha Lipponen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Aalto FI-00076, Finland
| | - Jukka Niskanen
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Eero Kontturi
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Aalto FI-00076, Finland
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Aalto FI-00076, Finland; Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry, Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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Mahmoud M, Kraxner J, Mehta A, Elsayed H, Galusek D, Bernardo E. Upcycling waste derived glass into high-performance photocatalytic scaffolds by alkali activation and direct ink writing. Heliyon 2024; 10:e24737. [PMID: 38298710 PMCID: PMC10828805 DOI: 10.1016/j.heliyon.2024.e24737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 01/05/2024] [Accepted: 01/12/2024] [Indexed: 02/02/2024] Open
Abstract
Novel and eco-friendly solutions are extensively needed for wastewater treatment. This work capitalizes on the combination of waste vitrification and additive manufacturing to produce an efficient photocatalyst for the specific purpose. Fine powders of waste-derived glass, containing Fe3O4 inclusions, by simple suspension (for a solid loading of 65 wt %) in alkaline solution (5 M NaOH), were transformed into pastes for direct ink writing. 3D-printed reticulated scaffolds were stabilized by the progressive hardening of a zeolite-like gel, formed by glass/solution interaction, at nearly room temperature. The printed scaffolds were successfully tested for the removal of methylene blue, realized by combining the high sorption capacity of the gel with the catalytic activity of magnetite inclusions, under UV light. A complete degradation of methylene blue is achieved by 90 min exposure, comparing favorably with other reported photocatalytic materials, requiring from 60 to 360 min. The photocatalytic activity was tested for several cycles, with no significant degradation. In other words, a waste-derived material can be reused for multiple times, to remediate wastewaters, with evident benefits on waste minimization.
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Affiliation(s)
- Mokhtar Mahmoud
- FunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia
- Department of Industrial Engineering, University of Padova, Padova, Italy
- Department of Glass Research, National Research Centre, Egypt
| | - Jozef Kraxner
- FunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia
| | - Akansha Mehta
- FunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia
| | - Hamada Elsayed
- Department of Industrial Engineering, University of Padova, Padova, Italy
| | - Dušan Galusek
- FunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia
- Joint Glass Centre of the IIC SAS, TnUAD and FChFT STU, Trenčín, Slovakia
| | - Enrico Bernardo
- Department of Industrial Engineering, University of Padova, Padova, Italy
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Gonçalves NPF, da Silva EF, Tarelho LAC, Labrincha JA, Novais RM. Simultaneous removal of multiple metal(loid)s and neutralization of acid mine drainage using 3D-printed bauxite-containing geopolymers. J Hazard Mater 2024; 462:132718. [PMID: 37844497 DOI: 10.1016/j.jhazmat.2023.132718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/12/2023] [Accepted: 10/03/2023] [Indexed: 10/18/2023]
Abstract
The mining industry is one of the largest sources of environmental concern globally. Herein we report for the first time the application of highly porous 3D-printed sorbents containing high amounts (50 wt%) of red mud, a hazardous waste derived from the alumina industry, for the remediation of acid mine drainage (AMD). The sorption capacity of the inorganic polymers was initially evaluated for the simultaneous removal of five metal(loid) elements, namely Cu(II), Ni(II), Zn(II), Cd(II) and As(V) in synthetic wastewater. The effect of the initial concentration, pH and contact time were assessed, reaching removal efficiencies between 64% and 98%, at pH 4 and initial concentration of 50 mg L-1 of each cation, after 24 h of contact time. The 3D-printed lattices were then used for the remediation of the real AMD water samples, and the role of adsorption and acidic neutralization was investigated. Lattices were also successfully regenerated and reused up to five cycles without compromising their performance. This work paves the way for the use of an industrial waste derived from the production of alumina as raw material for the management of the hazardous AMD.
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Affiliation(s)
- Nuno P F Gonçalves
- Department of Chemistry/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | | | - Luís A C Tarelho
- Department of Environment and Planning & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - João A Labrincha
- Dept. of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Rui M Novais
- Dept. of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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6
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Teegen IS, Schadte P, Wille S, Adelung R, Siebert L, Kern M. Comparison of properties and cost efficiency of zirconia processed by DIW printing, casting and CAD/CAM-milling. Dent Mater 2023; 39:669-676. [PMID: 37230861 DOI: 10.1016/j.dental.2023.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate the mechanical properties and cost efficiency of direct ink writing (DIW) printing of two different zirconia inks compared to casting and subtractive manufacturing. METHODS Zirconia disks were manufactured by DIW printing and the casting process and divided into six subgroups (n = 20) according to sintering temperatures (1350 °C, 1450 °C and 1550 °C) and two different ink compositions (Ink 1, Ink 2). A CAD/CAM-milled high strength zirconia (3Y-TZP) was added as reference group. The biaxial flexural strength (BFS) was measured using the piston-on-three-balls test. X-ray-diffraction (XRD) was used for microstructural analysis. The cost efficiency was compared for DIW printing and subtractive manufacturing by calculation of the manufacturing costs of one dental crown. RESULTS Using XRD, monoclinic and tetragonal phases were detected for Ink 1, for all other groups no monoclinic phase was detected. The CAD/CAM-milled ceramic showed a significantly higher BFS than all other groups. The BFS of Ink 2 was significantly higher than the BFS of Ink 1. At a sintering temperature of 1550 °C the mean BFS of the printed Ink 2 was 822 ± 174 MPa. The BFS of the cast materials did not show a significantly higher BFS than the corresponding printed group for any tested parameter-set. The manufacturing costs of DIW printed crowns are lower than the manufacturing costs of CAD/CAM-milled crowns. CONCLUSION DIW has a high potential to replace subtractive processes for dental applications, as it shows promising mechanical properties for appropriate ink compositions and facilitates a highly cost effective production.
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Affiliation(s)
- Isabell-Sophie Teegen
- Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Kiel University, Arnold-Heller-Straße 16, 24105 Kiel, Germany.
| | - Philipp Schadte
- Department of Material Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany.
| | - Sebastian Wille
- Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Kiel University, Arnold-Heller-Straße 16, 24105 Kiel, Germany.
| | - Rainer Adelung
- Department of Material Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany.
| | - Leonard Siebert
- Department of Material Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany.
| | - Matthias Kern
- Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Kiel University, Arnold-Heller-Straße 16, 24105 Kiel, Germany.
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Tan JD, Lee CP, Foo SY, Tan JCW, Tan SSY, Ong ES, Leo CH, Hashimoto M. 3D printability and biochemical analysis of revalorized orange peel waste. Int J Bioprint 2023; 9:776. [PMID: 37457944 PMCID: PMC10339448 DOI: 10.18063/ijb.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/23/2023] [Indexed: 07/18/2023] Open
Abstract
Orange peels are often discarded as food waste despite being a nutritious source of vitamins and antioxidants. These orange peel wastes (OPW) are produced in millions of tons globally every year; discarding them results in detrimental environmental and economical impacts. This paper discusses the application of 3D printing technology to effectively upcycle the OPW into edible, healthy snacks for consumption. We aimed to develop a method to enable OPW to formulate 3D-printable inks for direct ink writing (DIW). Using DIW 3D printing, we successfully created edible constructs of rheologically modified inks containing OPW. The formulated ink possessed an initial viscosity of 22.5 kPa.s, a yield stress of 377 Pa, and a storage modulus of 44.24 kPa. To validate the method, we conducted a biochemical analysis of the OPW at each stage of the fabrication process. This study suggested that our ink formulation and 3D printing process did not affect the content of bioflavonoids and antioxidants of the OPW. The cell viability test using human dermal microvascular endothelium (HMEC-1) suggested that the OPW did not exhibit cytotoxicity throughout the entire process of the ink manipulation. Overall, this study has highlighted a potential scenario to revalorize food waste into the food value chain using 3D printing toward more sustainable and circular food manufacturing and consumption.
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Affiliation(s)
- Jian Da Tan
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
| | - Cheng Pau Lee
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
| | - Su Yi Foo
- Science, Math & Technology, Singapore University of Technology and Design, Singapore 4787372, Singapore
| | - Joseph Choon Wee Tan
- Science, Math & Technology, Singapore University of Technology and Design, Singapore 4787372, Singapore
| | - Sakeena Si Yu Tan
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
| | - Eng Shi Ong
- Science, Math & Technology, Singapore University of Technology and Design, Singapore 4787372, Singapore
| | - Chen Huei Leo
- Science, Math & Technology, Singapore University of Technology and Design, Singapore 4787372, Singapore
| | - Michinao Hashimoto
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore
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Belyaeva AA, Tretyakov IV, Kireynov AV, Nashchekina YA, Solodilov VI, Korzhikova-Vlakh EG, Morozova SM. Fibrillar biocompatible colloidal gels based on cellulose nanocrystals and poly(N-isopropylacrylamide) for direct ink writing. J Colloid Interface Sci 2023; 635:348-357. [PMID: 36592504 DOI: 10.1016/j.jcis.2022.12.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/03/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
HYPOTHESIS Hydrogels based on cellulose nanocrystals (CNC) have attracted great interest because of their sustainability, biocompatibility, mechanical strength and fibrillar structure. Gelation of colloidal particles can be induced by the introduction of polymers. Existing examples include gels based on CNC and derivatives of cellulose or poly(vinyl alcohol), however, gel structure and their application for extrusion printing were not shown. Hence, we rationalize formation of colloidal gels based on mixture of poly(N-isopropylacrylamide) (PNIPAM) and CNC and control their structure and mechanical properties by variation of components ratio. EXPERIMENTS State diagram for colloidal system based on mixture of PNIPAM and CNC were established at 25 and 37 °C. Biocompatibility, fiber diameter and rheological properties of the gels were studied for different PNIPAM/CNC ratio. FINDINGS We show that depending on the ratio between PNIPAM and CNC, colloidal system could be in sol or gel state at 25 °C and at gel state or phase separated at 37 °C. Physically crosslinked hydrogels were thermosensitive and could reversibly change it transparency from translucent to opaque in biologically relevant temperature range. These colloidal hydrogels were biocompatible, had fibrillar structure and demonstrate shear-thinning behavior, which makes them a promising material for bioapplications related to extrusion printing.
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Affiliation(s)
- Anastasia A Belyaeva
- N.E. Bauman Moscow State Technical University, 2nd Baumanskaya Str,.5/1, Moscow 105005, Russia; Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 1 Severnij Pr., Chernogolovka, 142432 Moscow, Russia
| | - Ilya V Tretyakov
- N.E. Bauman Moscow State Technical University, 2nd Baumanskaya Str,.5/1, Moscow 105005, Russia
| | - Alexey V Kireynov
- N.E. Bauman Moscow State Technical University, 2nd Baumanskaya Str,.5/1, Moscow 105005, Russia
| | - Yuliya A Nashchekina
- Institute of Cytology, Russian Academy of Sciences, Tikhoreckiy pr. 4, St. Petersburg 194064, Russia
| | - Vitaliy I Solodilov
- N.E. Bauman Moscow State Technical University, 2nd Baumanskaya Str,.5/1, Moscow 105005, Russia
| | - Evgenia G Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, St. Petersburg 199004, Russia
| | - Sofia M Morozova
- N.E. Bauman Moscow State Technical University, 2nd Baumanskaya Str,.5/1, Moscow 105005, Russia.
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Dutta SD, Ganguly K, Randhawa A, Patil TV, Patel DK, Lim KT. Electrically stimulated 3D bioprinting of gelatin-polypyrrole hydrogel with dynamic semi-IPN network induces osteogenesis via collective signaling and immunopolarization. Biomaterials 2023; 294:121999. [PMID: 36669301 DOI: 10.1016/j.biomaterials.2023.121999] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/30/2022] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
In recent years, three-dimensional (3D) bioprinting of conductive hydrogels has made significant progress in the fabrication of high-resolution biomimetic structures with gradual complexity. However, the lack of an effective cross-linking strategy, ideal shear-thinning, appropriate yield strength, and higher print fidelity with excellent biofunctionality remains a challenge for developing cell-laden constructs, hindering the progress of extrusion-based 3D printing of conductive polymers. In this study, a highly stable and conductive bioink was developed based on polypyrrole-grafted gelatin methacryloyl (GelMA-PPy) with a triple cross-linking (thermo-photo-ionically) strategy for direct ink writing-based 3D printing applications. The triple-cross-linked hydrogel with dynamic semi-inner penetrating polymer network (semi-IPN) displayed excellent shear-thinning properties, with improved shape fidelity and structural stability during 3D printing. The as-fabricated hydrogel ink also exhibited "plug-like non-Newtonian" flow behavior with minimal disturbance. The bioprinted GelMA-PPy-Fe hydrogel showed higher cytocompatibility (93%) of human bone mesenchymal stem cells (hBMSCs) under microcurrent stimulation (250 mV/20 min/day). Moreover, the self-supporting and tunable mechanical properties of the GelMA-PPy bioink allowed 3D printing of high-resolution biological architectures. As a proof of concept, we printed a full-thickness rat bone model to demonstrate the structural stability. Transcriptomic analysis revealed that the 3D bioprinted hBMSCs highly expressed gene hallmarks for NOTCH/mitogen-activated protein kinase (MAPK)/SMAD signaling while down-regulating the Wnt/β-Catenin and epigenetic signaling pathways during osteogenic differentiation for up to 7 days. These results suggest that the developed GelMA-PPy bioink is highly stable and non-toxic to hBMSCs and can serve as a promising platform for bone tissue engineering applications.
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Affiliation(s)
- Sayan Deb Dutta
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Keya Ganguly
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Aayushi Randhawa
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Tejal V Patil
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Dinesh K Patel
- Institute of Forest Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Ki-Taek Lim
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea; Institute of Forest Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea; Biomechagen Co., Ltd., Chuncheon, 24341, Republic of Korea.
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Ma Y, Potappel J, Schutyser MA, Boom RM, Zhang L. Quantitative analysis of 3D food printing layer extrusion accuracy: Contextualizing automated image analysis with human evaluations: Quantifying 3D food printing accuracy. Curr Res Food Sci 2023; 6:100511. [PMID: 37200969 PMCID: PMC10186490 DOI: 10.1016/j.crfs.2023.100511] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/11/2023] [Accepted: 04/30/2023] [Indexed: 05/20/2023] Open
Abstract
3D food printing can customize food appearance, textures, and flavors to tailor to specific consumer needs. Current 3D food printing depends on trial-and-error optimization and experienced printer operators, which limits the adoption of the technology by general consumers. Digital image analysis can be applied to monitor the 3D printing process, quantify printing errors, and guide optimization of the printing process. We here propose an automated printing accuracy assessment tool based on layer-wise image analysis. Printing inaccuracies are quantified based on over- and under-extrusion with reference to the digital design. The measured defects are compared to human evaluations via an online survey to contextualize the errors and identify the most useful measurements to improve printing efficiency. The survey participants marked oozing and over-extrusion as inaccurate printing which matched the results obtained from automated image analysis. Although under-extrusion was also quantified by the more sensitive digital tool, the survey participants did not perceive consistent under-extrusion as inaccurate printing. The contextualized digital assessment tool provides useful estimations of printing accuracy and corrective actions to avoid printing defects. The digital monitoring approach may accelerate the consumer adoption of 3D food printing by improving the perceived accuracy and efficiency of customized food printing.
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11
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Tasmim S, Yousuf Z, Rahman FS, Seelig E, Clevenger AJ, VandenHeuvel SN, Ambulo CP, Raghavan S, Zimmern PE, Romero-Ortega MI, Ware TH. Liquid crystal elastomer based dynamic device for urethral support: Potential treatment for stress urinary incontinence. Biomaterials 2023; 292:121912. [PMID: 36434829 PMCID: PMC9772118 DOI: 10.1016/j.biomaterials.2022.121912] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/11/2022] [Indexed: 11/20/2022]
Abstract
Stress urinary incontinence (SUI) is characterized by the involuntary loss of urine due to increased intra-abdominal pressure during coughing, sneezing, or exercising. SUI affects 20-40% of the female population and is exacerbated by aging. Severe SUI is commonly treated with surgical implantation of an autologous or a synthetic sling underneath the urethra for support. These slings, however, are static, and their tension cannot be non-invasively adjusted, if needed, after implantation. This study reports the fabrication of a novel device based on liquid crystal elastomers (LCEs) capable of changing shape in response to temperature increase induced by transcutaneous IR light. The shape change of the LCE-based device was characterized in a scar tissue phantom model. An in vitro urinary tract model was designed to study the efficacy of the LCE-based device to support continence and adjust sling tension with IR illumination. Finally, the device was acutely implanted and tested for induced tension changes in female multiparous New Zealand white rabbits. The LCE device achieved 5.6% ± 1.1% actuation when embedded in an agar gel with an elastic modulus of 100 kPa. The corresponding device temperature was 44.9 °C ± 0.4 °C, and the surrounding agar temperature stayed at 42.1 °C ± 0.4 °C. Leaking time in the in vitro urinary tract model significantly decreased (p < 0.0001) when an LCE-based cuff was sutured around the model urethra from 5.2min ± 1min to 2min ±0.5min when the cuff was illuminated with IR light. Normalized leak point force (LPF) increased significantly (p = 0.01) with the implantation of an LCE-CB cuff around the bladder neck of multiparous rabbits. It decreased significantly (p = 0.023) when the device was actuated via IR light illumination. These results demonstrate that LCE material could be used to fabricate a dynamic device for treating SUI in women.
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Affiliation(s)
- Seelay Tasmim
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Zuha Yousuf
- Departments of Bioengineering and Biomedical Science, University of Houston, Houston, TX, 77004, USA
| | - Farial S Rahman
- Departments of Bioengineering and Biomedical Science, University of Houston, Houston, TX, 77004, USA
| | - Emily Seelig
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Abigail J Clevenger
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Sabrina N VandenHeuvel
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Cedric P Ambulo
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, 45433, USA
| | - Shreya Raghavan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Philippe E Zimmern
- Department of Urology, The University of Texas Southwestern, Dallas, TX, 75390, USA
| | - Mario I Romero-Ortega
- Departments of Bioengineering and Biomedical Science, University of Houston, Houston, TX, 77004, USA
| | - Taylor H Ware
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA.
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12
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Ji S, Li X, Wang S, Li H, Duan H, Yang X, Lv P. Physically Entangled Anti-Swelling Hydrogels with High Stiffness. Macromol Rapid Commun 2022; 43:e2200272. [PMID: 35640021 DOI: 10.1002/marc.202200272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/15/2022] [Indexed: 11/09/2022]
Abstract
Physically crosslinked hydrogels have great potential for tissue engineering because of their excellent biocompatibility and easy fabrication. However, physical crosslinking points are typically weaker compared to chemical ones and therefore cannot form robust hydrogels with excellent water stability, which greatly hinder their further applications. In this work, we report a novel hydrogel with high stiffness and outstanding anti-swelling performance crosslinked by hydrophobic polymer chains entanglements. The hydrophobic polymer polyimide (PI) was mixed with the hydrophilic polymer poly(vinyl pyrrolidone) (PVP) to form crosslinking points between the chains. At the equilibrium swelling state, tensile moduli of the hydrogel can be up to 22.57 MPa (higher than most existing hydrogels) and the equilibrium water swelling ratio (ESR) can be as low as 125.0%. By decreasing the PI mass ratio, tensile moduli and ESR of the hydrogel can be tuned in a wide range from 22.57 MPa to 0.005 MPa and 125.0% to 765.6%, respectively. Using PVP/PI solutions as inks, we fabricate uniform structures and multi-material structures whose mechanical properties are close to cartilage through a direct ink writing 3D printing platform. The current work demonstrates that entangled PVP/PI hydrogels have excellent tailoring capabilities and are promising candidates for tissue engineering applications. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Suchun Ji
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China
| | - Xiying Li
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China
| | - Shuang Wang
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China
| | - Hongyuan Li
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China.,CAPT, HEDPS and IFSA Collaborative Innovation Center of MoE, Peking University, Beijing, 100871, China
| | - Huiling Duan
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China.,CAPT, HEDPS and IFSA Collaborative Innovation Center of MoE, Peking University, Beijing, 100871, China
| | - Xin Yang
- Department of Orthopaedic, Peking University First Hospital, Beijing, 100034, China
| | - Pengyu Lv
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China
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13
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Chen Q, Tian E, Luo Z, Mo J. Adsorption film with sub-milli-interface morphologies via direct ink writing for indoor formaldehyde removal. J Hazard Mater 2022; 427:128190. [PMID: 35007806 DOI: 10.1016/j.jhazmat.2021.128190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/18/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
In-situ thermally regenerated flexible adsorption films are superior for long-term purification of indoor low-concentration volatile organic compounds (VOCs). To further improve the adsorption kinetics of the films, the surface morphology of adsorption films was suggested in hierarchical channel structure. However, such structure is far from practical applications because of its complicated fabrication method and limited flexibility. In this study, we proposed a convenient and fast method named direct ink writing (DIW) based 3D printing to fabricate flexible adsorption films. Inks were prepared to have appropriate rheological properties and good printability. Three types of adsorption film (flat, straight finned, and trough-like finned) were constructed on flexible polyimide circuit substrates by DIW. We utilized the printed adsorption films for indoor level (1 ppm) formaldehyde removal. The trough-like finned film achieved the best performance among the three printed films, showing a 275% longer penetration time and 252% larger effective adsorption capacity than the flat film. By conducting a 7-cycle adsorption-desorption experiment (more than 12 h), we verified that the films' adsorption performance could effectively recover via in-situ heating. This work could dance around the complicated coating process, increase the structural flexibility and reduce the adsorbent interfacial modification cost.
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Affiliation(s)
- Qiwei Chen
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China
| | - Enze Tian
- Songshan Lake Materials Laboratory, Dongguan 523808, China; Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ziyi Luo
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China
| | - Jinhan Mo
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China; Key Laboratory of Eco Planning & Green Building, Ministry of Education (Tsinghua University), Beijing 100084, China.
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14
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Zhang L, Lee W, Li X, Jiang Y, Fang NX, Dai G, Liu Y. 3D direct printing of mechanical and biocompatible hydrogel meta-structures. Bioact Mater 2022; 10:48-55. [PMID: 34901528 PMCID: PMC8637340 DOI: 10.1016/j.bioactmat.2021.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 07/01/2021] [Accepted: 08/12/2021] [Indexed: 01/08/2023] Open
Abstract
Direct Ink Writing (DIW) has demonstrated great potential as a versatile method to 3D print multifunctional structures. In this work, we report the implementation of hydrogel meta-structures using DIW at room temperature, which seamlessly integrate large specific surface areas, interconnected porous characteristics, mechanical toughness, biocompatibility, and water absorption and retention capabilities. Robust but hydrophobic polymers and weakly crosslinked nature-origin hydrogels form a balance in the self-supporting ink, allowing us to directly print complex meta-structures without sacrificial materials and heating extrusion. Mechanically, the mixed bending or stretching of symmetrical re-entrant cellular lattices and the unique curvature patterns are combined to provide little lateral expansion and large compressive energy absorbance when external forces are applied on the printed meta-structures. In addition, we have successfully demonstrated ear, aortic valve conduits and hierarchical architectures. We anticipate that the reported 3D meta-structured hydrogel would offer a new strategy to develop functional biomaterials for tissue engineering applications in the future.
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Affiliation(s)
- Lei Zhang
- Department of Mechanical & Industrial Engineering, Northeastern University, Boston, MA, 02115, United States
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, 650500, China
| | - Wenhan Lee
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, United States
| | - Xinhao Li
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States
| | - Yanhui Jiang
- Department of Mechanical & Industrial Engineering, Northeastern University, Boston, MA, 02115, United States
| | - Nicholas Xuanlai Fang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States
| | - Guohao Dai
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, United States
| | - Yongmin Liu
- Department of Mechanical & Industrial Engineering, Northeastern University, Boston, MA, 02115, United States
- Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, 02115, United States
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15
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Andriamiseza F, Bordignon D, Payré B, Vaysse L, Fitremann J. 3D printing of biocompatible low molecular weight gels: Imbricated structures with sacrificial and persistent N-alkyl-d-galactonamides. J Colloid Interface Sci 2022; 617:156-70. [PMID: 35276518 DOI: 10.1016/j.jcis.2022.02.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022]
Abstract
HYPOTHESIS We have shown earlier that low molecular weight gels based on N-heptyl-d-galactonamide hydrogels can be 3D printed by solvent exchange, but they tend to dissolve in the printing bath. We wanted to explore the printing of less soluble N-alkyl-d-galactonamides with longer alkyl chains. Less soluble hydrogels could be good candidates as cell culture scaffolds. EXPERIMENTS N-hexyl, N-octyl and N-nonyl-d-galactonamide solutions in dimethylsulfoxide are injected in a bath of water following patterns driven by a 2D drawing robot coupled to a z-platform. Solubilization of the gels with time has been determined and solubility of the gelators has been measured by NMR. Imbricated structures have been built with N-nonyl-d-galactonamide as a persistent ink and N-hexyl or N-heptyl-d-galactonamide as sacrificial inks. Human mesenchymal stem cells have been cultured on N-nonyl-d-galactonamide hydrogels prepared by cooling or by 3D printing. FINDINGS The conditions for printing well-resolved 3D patterns have been determined for the three gelators. In imbricated structures, the solubilization of N-hexyl or N-heptyl-d-galactonamide occurred after a few hours or days and gave channels. Human mesenchymal stem cells grown on N-nonyl-d-galactonamide hydrogels prepared by heating-cooling, which are stable and have a fibrillar microstructure, developed properly. 3D printed hydrogels, which microstructure is made of micrometric flakes, appeared too fragile to withstand cell growth.
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16
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He S, Radeke C, Jacobsen J, Lind JU, Mu H. Multi-material 3D printing of programmable and stretchable oromucosal patches for delivery of saquinavir. Int J Pharm 2021; 610:121236. [PMID: 34748810 DOI: 10.1016/j.ijpharm.2021.121236] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/19/2021] [Accepted: 10/23/2021] [Indexed: 11/30/2022]
Abstract
Oromucosal patches for drug delivery allow fast onset of action and ability to circumvent hepatic first pass metabolism of drugs. While conventional fabrication methods such as solvent casting or hot melt extrusion are ideal for scalable production of low-cost delivery patches, these methods chiefly allow for simple, homogenous patch designs. As alternative, a multi-material direct-ink-write 3D printing for rapid fabrication of complex oromucosal patches with unique design features was demonstrated in the present study. Specifically, three print-materials: an acidic saquinavir-loaded hydroxypropyl methylcellulose ink, an alkaline effervescent sodium carbonate-loaded ink, and a methyl cellulose backing material were combined in various designs. The CO2 content and pH of the microenvironment were controlled by adjusting the number of alkaline layers in the patch. Additionally, the rigid and brittle patches were converted to compliant and stretchable patches by implementing mesh-like designs. Our results illustrate how 3D printing can be used for rapid design and fabrication of multifunctional or customized oromucosal patches with tailored dosages and changed drug permeation.
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Affiliation(s)
- Shaolong He
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Carmen Radeke
- Department of Health Technology, Technical University of Denmark, Building 423, 2800 Kgs. Lyngby, Denmark
| | - Jette Jacobsen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Johan Ulrik Lind
- Department of Health Technology, Technical University of Denmark, Building 423, 2800 Kgs. Lyngby, Denmark.
| | - Huiling Mu
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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17
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Baniasadi H, Madani Z, Ajdary R, Rojas OJ, Seppälä J. Ascorbic acid-loaded polyvinyl alcohol/cellulose nanofibril hydrogels as precursors for 3D printed materials. Mater Sci Eng C Mater Biol Appl 2021; 130:112424. [PMID: 34702510 DOI: 10.1016/j.msec.2021.112424] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/23/2021] [Accepted: 09/05/2021] [Indexed: 12/26/2022]
Abstract
We proposed a simple method to process hydrogels containing polyvinyl alcohol and cellulose nanofibrils (PVA/CNF) to prepare volumetric architectures by direct ink writing (DIW). The presence of CNF in the aqueous PVA suspensions conferred rheology profiles that were suitable for extrusion and solidification in pre-designed shapes. The viscoelastic behavior of the hybrid inks enabled precise control on processability and shape retention, for instance, as demonstrated in multilayered lattice structures of high fidelity. After lyophilization, the obtained 3D-printed hydrogels presented a very high porosity, with open and interconnected pores, allowing a high-water uptake capacity (up to 1600%). The mechanical strength of the composite 3D-printed materials matched those of soft tissues, opening opportunities for skin applications. As such, drug-loaded samples revealed a controlled and efficient delivery of an antioxidant (ascorbic acid) in PBS buffer media at 23 °C (~80% for 8 h). Altogether, PVA/CNF hydrogels were introduced as suitable precursors of 3D-lattice geometries with excellent physical and mechanical characteristics.
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Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Zahraalsadat Madani
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland; Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland.
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18
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Wu X, Tu T, Dai Y, Tang P, Zhang Y, Deng Z, Li L, Zhang HB, Yu ZZ. Direct Ink Writing of Highly Conductive MXene Frames for Tunable Electromagnetic Interference Shielding and Electromagnetic Wave-Induced Thermochromism. Nanomicro Lett 2021; 13:148. [PMID: 34156564 PMCID: PMC8219826 DOI: 10.1007/s40820-021-00665-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/11/2021] [Indexed: 05/09/2023]
Abstract
3D printing of MXene frames with tunable electromagnetic interference shielding efficiency is demonstrated. Highly conductive MXene frames are reinforced by cross-linking with aluminum ions. Electromagnetic wave is visualized by electromagnetic-thermochromic MXene patterns. The highly integrated and miniaturized next-generation electronic products call for high-performance electromagnetic interference (EMI) shielding materials to assure the normal operation of their closely assembled components. However, the most current techniques are not adequate for the fabrication of shielding materials with programmable structure and controllable shielding efficiency. Herein, we demonstrate the direct ink writing of robust and highly conductive Ti3C2Tx MXene frames with customizable structures by using MXene/AlOOH inks for tunable EMI shielding and electromagnetic wave-induced thermochromism applications. The as-printed frames are reinforced by immersing in AlCl3/HCl solution to remove the electrically insulating AlOOH nanoparticles, as well as cross-link the MXene sheets and fuse the filament interfaces with aluminum ions. After freeze-drying, the resultant robust and porous MXene frames exhibit tunable EMI shielding efficiencies in the range of 25-80 dB with the highest electrical conductivity of 5323 S m-1. Furthermore, an electromagnetic wave-induced thermochromic MXene pattern is assembled by coating and curing with thermochromic polydimethylsiloxane on a printed MXene pattern, and its color can be changed from blue to red under the high-intensity electromagnetic irradiation. This work demonstrates a direct ink printing of customizable EMI frames and patterns for tuning EMI shielding efficiency and visualizing electromagnetic waves.
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Affiliation(s)
- Xinyu Wu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Tingxiang Tu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yang Dai
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Pingping Tang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yu Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Zhiming Deng
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Lulu Li
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Hao-Bin Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
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19
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Abstract
We developed a method to perform direct ink writing (DIW) three-dimensional (3D) printing of coconut-based products with high oil content by varying compositions of the coconut oil and the coconut cream. The addition of oils is particularly crucial in providing energy, developing neurological functions, and improving the palatability of food. Despite the potential merits of high oil-content foods, there have been limited studies on 3D printing of high oil-content foods. In particular, the effect of oil content on the printability of food inks has not been studied to date. 3D printing of food inks with high oil contents is challenging due to oil separation that leads to unpredictable changes in rheological properties. In this work, we surveyed the behavior of the mixture of the coconut oil and the coconut cream and identified the appropriate conditions for the food inks that show the printability in DIW 3D printing. We initially formulated coconut cream inks added with coconut oil that did not exhibit oil separation, and characterized the rheological properties of such inks. We successfully 3D-printed coconut cream with additional coconut oil and successfully fabricated 3D structures with inks containing 25% water with an additional 10% (w/w) of coconut oil. Texture profile analysis (TPA) suggested that the hardness index and the chewiness index of mesh-shaped 3D-printed coconut cream decreased due to an increase in the water content of the ink. Overall, this study offered an understanding of the stability of the food inks and demonstrated the fabrication of 3D colloidal food with controlled oil content, which can be applied to formulating foods with tunable oil content to cater to individual nutritional needs without compromising the stability of the inks.
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Affiliation(s)
- Cheng Pau Lee
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Rd Singapore 487372, Singapore
- SUTD-MIT International Design Centre (IDC), Singapore University of Technology and Design, 8 Somapah Rd Singapore 487372, Singapore
| | - Jon Yi Hoo
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Rd Singapore 487372, Singapore
| | - Michinao Hashimoto
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Rd Singapore 487372, Singapore
- SUTD-MIT International Design Centre (IDC), Singapore University of Technology and Design, 8 Somapah Rd Singapore 487372, Singapore
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20
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Gu S, Tian Y, Liang K, Ji Y. Chitin nanocrystals assisted 3D printing of polycitrate thermoset bioelastomers. Carbohydr Polym 2021; 256:117549. [PMID: 33483056 DOI: 10.1016/j.carbpol.2020.117549] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 12/30/2022]
Abstract
Citrate-based thermoset bioelastomer has numerous tissue engineering applications. However, its insoluble and unmeltable features restricted processing techniques for fabricating complex scaffolds. Herein, direct ink writing (DIW) was explored for 3D printing of poly(1, 8-octanediol-co-Pluronic F127 citrate) (POFC) bioelastomer scaffolds considering that POFC prepolymer (pre-POFC) was waterborne and could form a stable emulsion. The pre-POFC emulsion couldn't be printed, however, chitin nanocrystal (ChiNC) could be as a rheological modifier to tune the flow behavior of pre-POFC emulsion, and thus DIW printing of POFC scaffolds was successfully realized; moreover, ChiNC was also as a supporting agent to prevent collapse of filaments during thermocuring, and simultaneously as a biobased nanofiller to reinforce scaffolds. The rheological analyses showed the pre-POFC/ChiNC inks fulfilled the requirements for DIW printing. The printed scaffolds exhibited low swelling, and good performances in strength and resilence. Furthermore, the entire process was easily performed and eco-friendly.
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Affiliation(s)
- Shaohua Gu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yaling Tian
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Kai Liang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yali Ji
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
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21
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Seoane-Viaño I, Januskaite P, Alvarez-Lorenzo C, Basit AW, Goyanes A. Semi-solid extrusion 3D printing in drug delivery and biomedicine: Personalised solutions for healthcare challenges. J Control Release 2021; 332:367-389. [PMID: 33652114 DOI: 10.1016/j.jconrel.2021.02.027] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022]
Abstract
Three-dimensional (3D) printing is an innovative additive manufacturing technology, capable of fabricating unique structures in a layer-by-layer manner. Semi-solid extrusion (SSE) is a subset of material extrusion 3D printing, and through the sequential deposition of layers of gel or paste creates objects of any desired size and shape. In comparison to other extrusion-based technologies, SSE 3D printing employs low printing temperatures which makes it suitable for drug delivery and biomedical applications, and the use of disposable syringes provides benefits in meeting critical quality requirements for pharmaceutical use. Besides pharmaceutical manufacturing, SSE 3D printing has attracted increasing attention in the field of bioelectronics, particularly in the manufacture of biosensors capable of measuring physiological parameters or as a means to trigger drug release from medical devices. This review begins by highlighting the major printing process parameters and material properties that influence the feasibility of transforming a 3D design into a 3D object, and follows with a discussion on the current SSE 3D printing developments and their applications in the fields of pharmaceutics, bioprinting and bioelectronics. Finally, the advantages and limitations of this technology are explored, before focusing on its potential clinical applications and suitability for preparing personalised medicines.
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Affiliation(s)
- Iria Seoane-Viaño
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Paraquasil Group, Faculty of Pharmacy, University of Santiago de Compostela (USC), and Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela 15782, Spain
| | - Patricija Januskaite
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma Group (GI-1645), Universidade de Santiago de Compostela, 15782, Spain
| | - Abdul W Basit
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; FabRx Ltd., 3 Romney Road, Ashford, Kent TN24 0RW, UK.
| | - Alvaro Goyanes
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma Group (GI-1645), Universidade de Santiago de Compostela, 15782, Spain; FabRx Ltd., 3 Romney Road, Ashford, Kent TN24 0RW, UK.
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22
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Kuźmińska M, Pereira BC, Habashy R, Peak M, Isreb M, Gough TD, Isreb A, Alhnan MA. Solvent-free temperature-facilitated direct extrusion 3D printing for pharmaceuticals. Int J Pharm 2021; 598:120305. [PMID: 33540022 DOI: 10.1016/j.ijpharm.2021.120305] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 02/01/2023]
Abstract
In an era moving towards digital health, 3D printing has successfully proven its applicability in providing personalised medicine through a technology-based approach. Among the different 3D printing techniques, direct extrusion 3D printing has been demonstrated as a promising approach for on demand manufacturing of solid dosage forms. However, it usually requires the use of elevated temperatures and/or the incorporation of an evaporable solvent (usually water). This can implicate the addition of a drying step, which may compromise the integrity of moisture- or temperature-sensitive drugs, and open the door for additional quality control challenges. Here, we demonstrate a new approach that simplifies direct extrusion 3D printing process with the elimination of the post-printing drying step, by merely adding a fatty glyceride, glyceryl monostearate (GMS), to a model drug (theophylline) and permeable water insoluble methacrylate polymers (Eudragit RL and RS). Indeed, rheological studies indicated that the addition of a combination of a plasticiser, (triethyl citrate), and GMS to theophylline: methacrylate polymer blends significantly reduced the extensional viscosity (to <2.5 kPa·Sec) at 90 °C. Interestingly, GMS demonstrated a dual temperature-dependant behaviour by acting both as a plasticiser and a lubricant at printing temperature (90-110 °C), while aiding solidification at room temperature. X-ray powder diffraction indicated incomplete miscibility of GMS within the polymeric matrix at room temperature with the presence of a subtle diffraction peak, at 2(Θ) = 20°. The 3D printed tablets showed acceptable compendial weight and content uniformity as well as sufficient mechanical resistance. In vitro theophylline release from 3D printed tablets was dependant on Eudragit RL:RS ratio. All in all, this work contributes to the efforts of developing a simplified, facile and low-cost 3D printing for small batch manufacturing of bespoke tablets that circumvents the use of high temperature and post-manufacturing drying step.
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23
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Tan JJY, Lee CP, Hashimoto M. Preheating of Gelatin Improves its Printability with Transglutaminase in Direct Ink Writing 3D Printing. Int J Bioprint 2020; 6:296. [PMID: 33088999 PMCID: PMC7557522 DOI: 10.18063/ijb.v6i4.296] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 06/07/2020] [Indexed: 02/06/2023] Open
Abstract
Gelatin and transglutaminase (TG) ink is increasingly popular in direct ink writing three-dimensional (3D) printing of cellular scaffolds and edible materials. The use of enzymes to crosslink gelatin chains removes the needs for toxic crosslinkers and bypasses undesired side reactions due to the specificity of the enzymes. However, their application in 3D printing remains challenging primarily due to the rapid crosslinking that leads to the short duration of printable time. In this work, we propose the use of gelatin preheated for 7 days to extend the duration of the printing time of the gelatin ink. We first determined the stiffness of freshly prepared gelatin (FG) and preheated gelatin (PG) (5 – 20% w/w) containing 5% w/w TG. We selected gelatin hydrogels made from 7.5% w/w FG and 10% w/w PG that yielded similar stiffness for subsequent studies to determine the duration of the printable time. PG inks exhibited longer time required for gelation and a smaller increase in viscosity with time than FG inks of similar stiffness. Our study suggested the advantage to preheat gelatin to enhance the printability of the ink, which is essential for extrusion-based bioprinting and food printing.
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Affiliation(s)
- Justin Jia Yao Tan
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore.,SUTD-MIT International Design Centre, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Cheng Pau Lee
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore.,SUTD-MIT International Design Centre, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Michinao Hashimoto
- Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore.,SUTD-MIT International Design Centre, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
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24
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Mondal D, Srinivasan A, Comeau P, Toh YC, Willett TL. Acrylated epoxidized soybean oil/hydroxyapatite-based nanocomposite scaffolds prepared by additive manufacturing for bone tissue engineering. Mater Sci Eng C Mater Biol Appl 2020; 118:111400. [PMID: 33255003 DOI: 10.1016/j.msec.2020.111400] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022]
Abstract
The mechanical properties and biocompatibility of nanocomposites composed of Acrylated Epoxidized Soybean Oil (AESO), nano-Hydroxyapatite (nHA) rods and either 2-Hydroxyethyl Acrylate (HEA) or Polyethylene Glycol Diacrylate (PEGDA) and 3D printed using extrusion-based additive manufacturing methods were investigated. The effects of addition of HEA or PEGDA on the rheological, mechanical properties and cell-biomaterial interactions were studied. AESO, PEGDA (or HEA), and nHA were composited using an ultrasonic homogenizer and scaffolds were 3D printed using a metal syringe on an extrusion-based 3D printer while simultaneously UV cured during layer-by-layer deposition. Nanocomposite inks were characterized for their viscosity before curing, and dispersion of the nHA particles and tensile mechanical properties after curing. Proliferation and differentiation of human bone marrow-derived mesenchymal stem cells (BM-MSCs) were studied by seeding cells onto the scaffolds and culturing in osteogenic differentiation medium for 7, 14 and 21 days. Overall, each of the scaffolds types demonstrated controlled morphology resulting from the printability of nanocomposite inks, well-dispersed nHA particles within the polymer matrices, and were shown to support cell proliferation and osteogenic differentiation after 14 and 21 days of culture. However, the nature of the functional groups present in each ink detectably affected the mechanical properties and cytocompatibility of the scaffolds. For example, while the incorporation of HEA reduced nHA dispersion and tensile strength of the final nanocomposite, it successfully enhanced shear yield strength, and printability, as well as cell adhesion, proliferation and osteogenic differentiation, establishing a positive effect perhaps due to additional hydrogen bonding.
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Affiliation(s)
- Dibakar Mondal
- Composite Biomaterial Systems Laboratory, Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo N2L 3G1, Canada
| | - Akshaya Srinivasan
- Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, #04-10, 117583, Singapore
| | - Patricia Comeau
- Composite Biomaterial Systems Laboratory, Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo N2L 3G1, Canada
| | - Yi-Chin Toh
- Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, #04-10, 117583, Singapore
| | - Thomas L Willett
- Composite Biomaterial Systems Laboratory, Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo N2L 3G1, Canada.
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25
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Nguyen TNH, Nolan JK, Cheng X, Park H, Wang Y, Lam S, Lee H, Kim SJ, Shi R, Chubykin AA, Lee H. Fabrication and ex vivo evaluation of activated carbon-Pt microparticle based glutamate biosensor. J Electroanal Chem (Lausanne) 2020; 866. [PMID: 32489342 DOI: 10.1016/j.jelechem.2020.114136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
As one of the most abundant neurotransmitters in the brain and the spinal cord, glutamate plays many important roles in the nervous system. Precise information about the level of glutamate in the extracellular space of living brain tissue may provide new insights on fundamental understanding of the role of glutamate in neurological disorders as well as neurophysiological phenomena. Electrochemical sensor has emerged as a promising solution that can satisfy the requirement for highly reliable and continuous monitoring method with good spatiotemporal resolution for characterization of extracellular glutamate concentration. Recently, we published a method to create a simple printable glutamate biosensor using platinum nanoparticles. In this work, we introduce an even simpler and lower cost conductive polymer composite using commercially available activated carbon with platinum microparticles to easily fabricate highly sensitive glutamate biosensor using direct ink writing method. The fabricated biosensors are functionality superior than previously reported with the sensitivity of 5.73 ± 0.078 nA μM-1 mm-2, detection limit of 0.03 μM, response time less than or equal to 1 s, and a linear range from 1 μM up to 925 μM. In this study, we utilize astrocyte cell culture to demonstrate our biosensor's ability to monitor glutamate uptake process. We also demonstrate direct measurement of glutamate release from optogenetic stimulation in mouse primary visual cortex (V1) brain slices.
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Affiliation(s)
- Tran N H Nguyen
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - James K Nolan
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Xi Cheng
- Department of Biological Sciences, Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN, USA
| | - Hyunsu Park
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Yi Wang
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Stephanie Lam
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Hyungwoo Lee
- Samsung Advanced Institute of Technology, Suwon, South Korea
| | - Sang Joon Kim
- Samsung Advanced Institute of Technology, Suwon, South Korea
| | - Riyi Shi
- College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Alexander A Chubykin
- Department of Biological Sciences, Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN, USA
| | - Hyowon Lee
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
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26
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Mondal D, Willett TL. Mechanical properties of nanocomposite biomaterials improved by extrusion during direct ink writing. J Mech Behav Biomed Mater 2020; 104:103653. [PMID: 32174411 DOI: 10.1016/j.jmbbm.2020.103653] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/17/2020] [Accepted: 01/23/2020] [Indexed: 11/16/2022]
Abstract
In this study, single filaments of acrylated epoxidized soybean oil (AESO)/polyethylene glycol diacrylate (PEGDA)/nanohydroxyapatite (nHA)-based nanocomposites intended for bone defect repair have displayed significant improvement of their mechanical properties when extruded through smaller needle gauges before UV curing. These nanocomposite inks can be deposited layer-by-layer during direct ink writing (DIW) - a form of additive manufacturing. Single filaments were prepared by extruding the nanocomposite ink through needles with varying diameters from 0.21 mm to 0.84 mm and then UV cured. Filaments and cast specimens were tensile tested to determine elastic modulus, strength and toughness. The cured nanocomposite filaments were further characterized using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). SEM confirmed that the hydroxyapatite nanoparticles were well dispersed in the polymer matrices. The ultimate tensile strength and moduli increased as the diameter of the extrusion needle was decreased. These correlated with increased matrix crystallinity and fewer defects. For instance, filaments extruded through 0.84 mm diameter needles had ultimate tensile stress and modulus of 26.3 ± 2.8 MPa and 885 ± 100 MPa, respectively, whereas, filaments extruded through 0.21 mm needles had ultimate tensile stress and modulus of 48.9 ± 4.0 MPa and 1696 ± 172 MPa, respectively. This study has demonstrated enhanced mechanical properties resulting from extrusion-based direct ink writing of a new AESO-PEGDA-nHA nanocomposite biomaterial intended for biomedical applications. These enhanced properties are the result of fewer defects and increased crystallinity. A means of achieving mechanical properties suitable for repairing bone defects is apparent.
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Affiliation(s)
- Dibakar Mondal
- Composite Biomaterial Systems Laboratory, Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo, N2L 3G1, Canada
| | - Thomas L Willett
- Composite Biomaterial Systems Laboratory, Department of Systems Design Engineering, University of Waterloo, 200 University Ave. West, Waterloo, N2L 3G1, Canada.
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27
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Nolan JK, Nguyen TNH, Fattah M, Page JC, Shi R, Lee H. Ex vivo electrochemical measurement of glutamate release during spinal cord injury. MethodsX 2019; 6:1894-1900. [PMID: 31508326 PMCID: PMC6727010 DOI: 10.1016/j.mex.2019.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/05/2019] [Indexed: 11/28/2022] Open
Abstract
Excessive glutamate release following traumatic spinal cord injury (SCI) has been associated with exacerbating the extent of SCI. However, the mechanism behind sustained high levels of extracellular glutamate is unclear. Spinal cord segments mounted in a sucrose double gap recording chamber are an established model for traumatic spinal cord injury. We have developed a method to record, with micro-scale printed glutamate biosensors, glutamate release from ex vivo rat spinal cord segments following injury. This protocol would work equally well for similar glutamate biosensors.
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Affiliation(s)
- James K Nolan
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, IN, USA
| | - Tran N H Nguyen
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, IN, USA
| | - Mara Fattah
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, IN, USA
| | - Jessica C Page
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Riyi Shi
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, IN, USA.,Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Hyowon Lee
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
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28
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Elsayed H, Rebesan P, Giacomello G, Pasetto M, Gardin C, Ferroni L, Zavan B, Biasetto L. Direct ink writing of porous titanium (Ti6Al4V) lattice structures. Mater Sci Eng C Mater Biol Appl 2019; 103:109794. [PMID: 31349412 DOI: 10.1016/j.msec.2019.109794] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/17/2019] [Accepted: 05/24/2019] [Indexed: 12/27/2022]
Abstract
Ti6Al4V components, for biomedical and aerospace sectors, are receiving a great interest especially after the advent of additive manufacturing technologies. The most used techniques are Selective Laser Sintering (SLS), Selective Laser Melting (SLM) and Electron Beam Melting (EBM). In the current research, we developed 3D-printed Ti6Al4V scaffolds by Direct Ink Writing (DIW) technology. Appropriate ink formulations, based on water-titanium powder suspensions, were achieved by controlling the rheological properties of the developed inks. After printing process, and drying, the printed components were sintered at 1400 °C under high vacuum for 3 h. Highly porous titanium scaffolds (with porosity up to 65 vol%) were produced and different geometries were printed. The influence of the porosity on the morphology, compression strength and biocompatibility of the scaffolds was investigated.
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29
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Nguyen TNH, Nolan JK, Park H, Lam S, Fattah M, Page JC, Joe HE, Jun MBG, Lee H, Kim SJ, Shi R, Lee H. Facile fabrication of flexible glutamate biosensor using direct writing of platinum nanoparticle-based nanocomposite ink. Biosens Bioelectron 2019; 131:257-266. [PMID: 30849725 DOI: 10.1016/j.bios.2019.01.051] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/18/2019] [Accepted: 01/28/2019] [Indexed: 01/23/2023]
Abstract
Glutamate excitotoxicity is a pathology in which excessive glutamate can cause neuronal damage and degeneration. It has also been linked to secondary injury mechanisms in traumatic spinal cord injury. Conventional bioanalytical techniques used to characterize glutamate levels in vivo, such as microdialysis, have low spatiotemporal resolution, which has impeded our understanding of this dynamic event. In this study, we present an amperometric biosensor fabricated using a simple direct ink writing technique for the purpose of in vivo glutamate monitoring. The biosensor is fabricated by immobilizing glutamate oxidase on nanocomposite electrodes made of platinum nanoparticles, multi-walled carbon nanotubes, and a conductive polymer on a flexible substrate. The sensor is designed to measure extracellular dynamics of glutamate and other potential biomarkers during a traumatic spinal cord injury event. Here we demonstrate good sensitivity and selectivity of these rapidly prototyped implantable biosensors that can be inserted into a spinal cord and measure extracellular glutamate concentration. We show that our biosensors exhibit good flexibility, linear range, repeatability, and stability that are suitable for future in vivo evaluation.
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Affiliation(s)
- Tran N H Nguyen
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - James K Nolan
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Hyunsu Park
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Stephanie Lam
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA
| | - Mara Fattah
- School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA
| | - Jessica C Page
- College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Hang-Eun Joe
- School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA
| | - Martin B G Jun
- School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA
| | - Hyungwoo Lee
- Samsung Advanced Institute of Technology, Suwon, South Korea
| | - Sang Joon Kim
- Samsung Advanced Institute of Technology, Suwon, South Korea
| | - Riyi Shi
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA; College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
| | - Hyowon Lee
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Device, Purdue University, West Lafayette, IN, USA.
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30
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Jin Z, Wu R, Shen J, Yang X, Shen M, Xu W, Huang R, Zhang L, Yang G, Gao C, Gou Z, Xu S. Nonstoichiometric wollastonite bioceramic scaffolds with core-shell pore struts and adjustable mechanical and biodegradable properties. J Mech Behav Biomed Mater 2018; 88:140-149. [PMID: 30170193 DOI: 10.1016/j.jmbbm.2018.08.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/14/2018] [Accepted: 08/19/2018] [Indexed: 02/06/2023]
Abstract
Controllable mechanical strength and biodegradation of bioceramic scaffolds is a great challenge to treat the load-bearing bone defects. Herein a new strategy has been developed to fabricate porous bioceramic scaffolds with adjustable component distributions based on varying the core-shell-structured nozzles in three-dimensional (3D) direct ink writing platform. The porous bioceramic scaffolds composed of different nonstoichiometic calcium silicate (nCSi) with 0%, 4% or 10% of magnesium-substituting-calcium ratio (CSi, CSi-Mg4, CSi-Mg10) was fabricated. Beyond the mechanically mixed composite scaffolds, varying the different nCSi slurries through the coaxially aligned bilayer nozzle makes it easy to create core-shell bilayer bioceramic filaments and better control of the different nCSi distribution in pore strut after sintering. It was evident that the magnesium substitution in CSi contributed to the increase of compressive strength for the single-phasic scaffolds from 11.2 MPa (CSi), to 39.4 MPa (CSi-Mg4) and 80 MPa (CSi-Mg10). The nCSi distribution in pore struts in the series of core-shell-strut scaffolds could significantly adjust the strength [e.g. CSi@CSi-Mg10 (58.9 MPa) vs CSi-Mg10@CSi (30.4 MPa)] and biodegradation ratio in Tris buffer for a long time stage (6 weeks). These findings demonstrate that the nCSi components with different distributions in core or shell layer of pore struts lead to tunable strength and biodegradation inside their interconnected macropore architectures of the scaffolds. It is possibly helpful to develop new bioactive scaffolds for time-dependent tailoring mechanical and biological performances to significantly enhance bone regeneration and repair applications, especially in some load-bearing bone defects.
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Affiliation(s)
- Zhouwen Jin
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China
| | - Ronghuan Wu
- Department of Orthopedics, The First Affiliated Hospital, School of Medicine of Zhejiang University, Hangzhou 310003, China
| | - Jianhua Shen
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China
| | - Xianyan Yang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China
| | - Miaoda Shen
- Department of Orthopedics, The First Affiliated Hospital, School of Medicine of Zhejiang University, Hangzhou 310003, China
| | - Wangqiong Xu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, China
| | - Rong Huang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, China
| | - Lei Zhang
- Department of Orthopdedic Surgery, The 3rd Hospital Affiliated to Wenzhou Medical University, Rui'an 325200, China
| | - Guojing Yang
- Department of Orthopdedic Surgery, The 3rd Hospital Affiliated to Wenzhou Medical University, Rui'an 325200, China
| | - Changyou Gao
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China
| | - Zhongru Gou
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou 310058, China.
| | - Sanzhong Xu
- Department of Orthopedics, The First Affiliated Hospital, School of Medicine of Zhejiang University, Hangzhou 310003, China.
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31
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Raymond S, Maazouz Y, Montufar EB, Perez RA, González B, Konka J, Kaiser J, Ginebra MP. Accelerated hardening of nanotextured 3D-plotted self-setting calcium phosphate inks. Acta Biomater 2018; 75:451-462. [PMID: 29842972 DOI: 10.1016/j.actbio.2018.05.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/03/2018] [Accepted: 05/25/2018] [Indexed: 11/30/2022]
Abstract
Direct ink writing (DIW) techniques open up new possibilities for the fabrication of patient-specific bone grafts. Self-setting calcium phosphate inks, which harden at low temperature, allow obtaining nanostructured scaffolds with biomimetic properties and enhanced bioactivity. However, the slow hardening kinetics hampers the translation to the clinics. Different hydrothermal treatments for the consolidation of DIW scaffolds fabricated with an α-tricalcium phosphate /pluronic F127 ink were explored, comparing them with a biomimetic treatment. Three different scaffold architectures were analysed. The hardening process, associated to the conversion of α-tricalcium phosphate to hydroxyapatite was drastically accelerated by the hydrothermal treatments, reducing the time for complete reaction from 7 days to 30 minutes, while preserving the scaffold architectural integrity and retaining the nanostructured features. β-tricalcium phosphate was formed as a secondary phase, and a change of morphology from plate-like to needle-like crystals in the hydroxyapatite phase was observed. The binder was largely released during the treatment. The hydrothermal treatment resulted in a 30% reduction of the compressive strength, associated to the residual presence of β-tricalcium phosphate. Biomimetic and hydrothermally treated scaffolds supported the adhesion and proliferation of rat mesenchymal stem cells, indicating a good suitability for bone tissue engineering applications. STATEMENT OF SIGNIFICANCE 3D plotting has opened up new perspectives in the bone regeneration field allowing the customisation of synthetic bone grafts able to fit patient-specific bone defects. Moreover, this technique allows the control of the scaffolds' architecture and porosity. The present work introduces a new method to harden biomimetic hydroxyapatite 3D-plotted scaffolds which avoids high-temperature sintering. It has two main advantages: i) it is fast and simple, reducing the whole fabrication process from the several days required for the biomimetic processing to a few hours; and ii) it retains the nanostructured character of biomimetic hydroxyapatite and allows controlling the porosity from the nano- to the macroscale. Moreover, the good in vitro cytocompatibility results support its suitability for cell-based bone regeneration therapies.
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Affiliation(s)
- Santiago Raymond
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Barcelona Research Centre for Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Mimetis Biomaterials, Cerdanyola del Vallès, Barcelona, Spain
| | - Yassine Maazouz
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Barcelona Research Centre for Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Mimetis Biomaterials, Cerdanyola del Vallès, Barcelona, Spain
| | - Edgar B Montufar
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; CEITEC - Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Roman A Perez
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; UIC Regenerative Medicine Research Institute. Universitat Internacional de Catalunya (UIC), Barcelona, Spain
| | - Borja González
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
| | - Joanna Konka
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Barcelona Research Centre for Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
| | - Jozef Kaiser
- CEITEC - Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Maria-Pau Ginebra
- Dept. Materials Science and Metallurgical Engineering, Group of Biomaterials, Biomechanics and Tissue Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Barcelona Research Centre for Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain.
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