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Zhong H, Li Z, Zhao T, Chen Y. Surface Modification of Nanofibers by Physical Adsorption of Fiber-Homologous Amphiphilic Copolymers and Nanofiber-Reinforced Hydrogels with Excellent Tissue Adhesion. ACS Biomater Sci Eng 2021; 7:4828-4837. [PMID: 34478620 DOI: 10.1021/acsbiomaterials.1c00982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a simple approach to modify hydrophobic PCL nanofibers by adsorption of a fiber-homologous amphiphilic triblock copolymer (PCL-b-PEG-b-PCL, PCEC). The modified PCL nanofibers were then utilized to reinforce a physical hydrogel, which was formed by micellar crosslinking of the same PCEC triblock copolymer. Therefore, the copolymer played a dual role in not only dispersing and stabilizing nanofibers but also additionally providing a framework for the hydrogel matrix. The mechanical strength of the hydrogel was significantly enhanced by addition of the modified PCL nanofibers, and the gel modulus can be tuned by varying the concentration of the copolymer and nanofibers. The effect of nanofiber size and content on the mechanical properties of the hydrogel matrices was studied. Different from hydrogel composites that were reinforced by 2D fiber meshes or 3D woven fiber networks, this free fiber-reinforced hydrogel can be readily injected to adapt to the environmental shape and self-heal. The hydrogel composites showed superior tissue adhesion properties compared to the commercially available fibrin glue, especially in muscle adhesion. Due to its injectable and self-healing properties, this nanofiber-reinforced hydrogel may have great potential as a new type of tissue sealant.
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Affiliation(s)
- Hai Zhong
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhiyong Li
- Nepgel Chemical Co., Ltd., No. 127, China South-City Industrial Zone, Longgang District, Shenzhen 518111, China
| | - Tianyu Zhao
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
| | - Yongming Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510275, China
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Jia X, Low Z, Chen H, Xiong S, Wang Y. Atomic layer deposition of Al 2 O 3 on porous polypropylene hollow fibers for enhanced membrane performances. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Linking Findings in Microfluidics to Membrane Emulsification Process Design: The Importance of Wettability and Component Interactions with Interfaces. MEMBRANES 2016; 6:membranes6020026. [PMID: 27187484 PMCID: PMC4931521 DOI: 10.3390/membranes6020026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/18/2016] [Accepted: 05/05/2016] [Indexed: 11/16/2022]
Abstract
In microfluidics and other microstructured devices, wettability changes, as a result of component interactions with the solid wall, can have dramatic effects. In emulsion separation and emulsification applications, the desired behavior can even be completely lost. Wettability changes also occur in one phase systems, but the effect is much more far-reaching when using two-phase systems. For microfluidic emulsification devices, this can be elegantly demonstrated and quantified for EDGE (Edge-base Droplet GEneration) devices that have a specific behavior that allows us to distinguish between surfactant and liquid interactions with the solid surface. Based on these findings, design rules can be defined for emulsification with any micro-structured emulsification device, such as direct and premix membrane emulsification. In general, it can be concluded that mostly surface interactions increase the contact angle toward 90°, either through the surfactant, or the oil that is used. This leads to poor process stability, and very limited pressure ranges at which small droplets can be made in microfluidic systems, and cross-flow membrane emulsification. In a limited number of cases, surface interactions can also lead to lower contact angles, thereby increasing the operational stability. This paper concludes with a guideline that can be used to come to the appropriate combination of membrane construction material (or any micro-structured device), surfactants and liquids, in combination with process conditions.
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Enhancing the hydrophilicity and water permeability of polypropylene membranes by nitric acid activation and metal oxide deposition. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.03.044] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pan L, Wang H, Wu C, Liao C, Li L. Tannic-Acid-Coated Polypropylene Membrane as a Separator for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16003-16010. [PMID: 26177514 DOI: 10.1021/acsami.5b04245] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To solve the wetting capability issue of commercial polypropylene (PP) separators in lithium-ion batteries (LIBs), we developed a simple dipping surface-coating process based on tannic acid (TA), a natural plant polyphenol. Fourier transform infrared and X-ray photoelectron measurements indicate that the TA is coated successfully on the PP separators. Scanning electron microscopy images show that the TA coating does not destroy the microporous structure of the separators. After being coated with TA, the PP separators become more hydrophilic, which not only enhances the liquid electrolyte retention ability but also increases the ionic conductivity. The battery performance, especially for power capability, is improved after being coated with TA. It indicates that this TA-coating method provides a promising process by which to develop an advanced polymer membrane separator for lithium-ion batteries.
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Affiliation(s)
- Lei Pan
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - Haibin Wang
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - Chaolumen Wu
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - Chenbo Liao
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - Lei Li
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
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Chen H, Lin Q, Xu Q, Yang Y, Shao Z, Wang Y. Plasma activation and atomic layer deposition of TiO2 on polypropylene membranes for improved performances of lithium-ion batteries. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.02.004] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xu Q, Yang J, Dai J, Yang Y, Chen X, Wang Y. Hydrophilization of porous polypropylene membranes by atomic layer deposition of TiO2 for simultaneously improved permeability and selectivity. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.08.018] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Peng B, Chu X, Li Y, Li D, Chen Y, Zhao J. Adsorption kinetics and stability of poly(ethylene oxide)-block-polystyrene micelles on polystyrene surface. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.08.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Peng B, Li Y, Zhao Z, Chen Y, Han CC. Facile surface modification of PVDF microfiltration membrane by strong physical adsorption of amphiphilic copolymers. J Appl Polym Sci 2013. [DOI: 10.1002/app.39516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Peng
- Laboratory of Polymer Physics and Chemistry; Institute of Chemistry, The Chinese Academy of Sciences; Beijing; 100190; People's Republic of China
| | - Yuyan Li
- Laboratory of Polymer Physics and Chemistry; Institute of Chemistry, The Chinese Academy of Sciences; Beijing; 100190; People's Republic of China
| | - Zhiguo Zhao
- Laboratory of Polymer Physics and Chemistry; Institute of Chemistry, The Chinese Academy of Sciences; Beijing; 100190; People's Republic of China
| | - Yongming Chen
- Laboratory of Polymer Physics and Chemistry; Institute of Chemistry, The Chinese Academy of Sciences; Beijing; 100190; People's Republic of China
| | - Charles C. Han
- Laboratory of Polymer Physics and Chemistry; Institute of Chemistry, The Chinese Academy of Sciences; Beijing; 100190; People's Republic of China
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Bajpai AK. Blood protein adsorption onto a polymeric biomaterial of polyethylene glycol and poly[(2-hydroxyethyl methacrylate)-co-acrylonitrile] and evaluation ofin vitro blood compatibility. POLYM INT 2004. [DOI: 10.1002/pi.1673] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hüsken LE, Oomes M, Schroën K, Tramper J, de Bont JAM, Beeftink R. Membrane-facilitated bioproduction of 3-methylcatechol in an octanol/water two-phase system. J Biotechnol 2002; 96:281-9. [PMID: 12044556 DOI: 10.1016/s0168-1656(02)00045-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bioproduction of 3-methylcatechol from toluene by Pseudomonas putida MC2 was studied in the presence of an additional 1-octanol phase. This solvent was used to supply the substrate and extract the product, in order to keep the aqueous concentrations low. A hollow-fibre membrane kept the octanol and aqueous phase separated to prevent phase toxicity towards the bacterium. Volumetric production rates increased approximately 40% as compared to two-phase 3-methylcatechol production with direct phase contact. Preliminary investigations on downstream processing of 3-methylcatechol showed that 1 M of sodium hydroxide selectively extracted the disodium salt of 3-methylcatechol into an aqueous phase.
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Affiliation(s)
- Leonie E Hüsken
- Food and Bioprocess Engineering Group, Department of Agrotechnology and Food Sciences, Wageningen University, PO Box 8129, 6700 EV, Wageningen, The Netherlands.
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Rovira-Bru M, Giralt F, Cohen Y. Protein Adsorption onto Zirconia Modified with Terminally Grafted Polyvinylpyrrolidone. J Colloid Interface Sci 2001; 235:70-79. [PMID: 11237444 DOI: 10.1006/jcis.2000.7355] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The potential effectiveness of poly(vinyl pyrrolidone) (PVP) as a zirconia surface modifier for protein adsorption reduction was investigated using lysozyme (LYS). The relatively small size of LYS (45 x 30 x 30 Å) allowed for testing the adequacy of the graft polymerization method for producing a dense surface chain coverage to exclude LYS from direct interaction with the zirconia surface. The study demonstrated that a PVP brush layer is capable of reducing lysozyme adsorption. Overall, the maximum adsorption capacity decreased (by up to about 76%) due to surface modification with increasing polymer/silane surface coverage ratio (mol/mol). Adsorption reduction, due to protein exclusion from the surface by the tethered polymer layer, increased significantly when the distance between surface chains was less than the large axis of LYS (i.e., 45 Å). The present results are encouraging and suggest further consideration of polymer-modified ceramic surfaces for reducing fouling of ceramic membranes during protein ultrafiltration and producing ceramic biocompatible surfaces for biomedical applications. Copyright 2001 Academic Press.
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Affiliation(s)
- Montserrat Rovira-Bru
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Catalunya, Spain
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Potential effect of the membrane potting on the long-term performance during hydrolysis of edible oil. J Memb Sci 2000. [DOI: 10.1016/s0376-7388(99)00205-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Putman B, Van der Meeren P, Thierens D. Reduced bovine serum albumin adsorption by prephosphatation of powdered zirconium oxide. Colloids Surf A Physicochem Eng Asp 1997. [DOI: 10.1016/s0927-7757(96)03978-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vaidya A, Bell G, Halling P. Aqueous-organic membrane bioreactors part II. Breakthrough pressure measurement. J Memb Sci 1994. [DOI: 10.1016/0376-7388(94)00144-n] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Schröen C, Cohen Stuart M, Van der Padt A, Van't Riet K. Wettability of tri-block copolymer coated hydrophobic surfaces Predictions and measurements. Colloids Surf A Physicochem Eng Asp 1994. [DOI: 10.1016/0927-7757(94)02926-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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