Biofouling-resistance control of expanded poly(tetrafluoroethylene) membrane via atmospheric plasma-induced surface PEGylation

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Title:	Biofouling-resistance control of expanded poly(tetrafluoroethylene) membrane via atmospheric plasma-induced surface PEGylation
Authors:	樋口亞紺;Venault, Antoine;Chang, Yung;Hsu, Hung-Hsing;Jhong, Jheng-Fong;Yang, Hui-Shan;Wei, Ta-Chin;Tung, Kuo-Lun;Higuchi, Akon;Huang, James
Contributors:	工學院化學工程與材料工程學系
Keywords:	adsorption;Anti-biofouling;Applied sciences;artificial membranes;Atmospheric plasma treatment;Atmospherics;Bacteria;biofouling;bioreactors;chemical bonding;coatings;composite polymers;Contact angle;Copolymers;Escherichia coli;Exact sciences and technology;Exchange resins and membranes;fibrinogen;Forms of application and semi-finished materials;Fourier transform infrared spectroscopy;Grafting;Gram-negative bacteria;Gram-positive bacteria;Membranes;PEGylated ePTFE membranes;Polymer industry, paints, wood;process control;Staphylococcus epidermidis;Surface chemistry;Surface roughness;Technology of polymers
Date:	2013-07-05
Issue Date:	2026-04-21 14:12:56 (UTC+8)
Publisher:	Elsevier;Amsterdam: Elsevier B.V
Abstract:	摘要： In this work, the research focus is laid on the preparation of biofouling-resistant expanded poly(tetrafluoroethylene) (ePTFE) membranes via a facile process of atmospheric plasma-induced surface PEGylation. After surface coating of poly(ethylene glycol) methyl ether methacrylate (PEGMA), plasma-induced copolymerization was performed by a new atmospheric plasma treatment process over a short period ranging from 0 to 120s. Controllable grafting and growth of PEGylated copolymer segments with treatment time was ascertained by FT-IR, contact angle, surface roughness, and grafting yield analysis. The grafting yield was enhanced with the plasma treatment duration, evidencing a very good process control. The surface roughness increased until a 60s treatment time, before decreasing owed to saturation of surfaces with grafted copolymer and the obtaining of homogeneous PEGylated layer. The water contact angle dropped from 105±1° for the virgin membrane to 9±1° for the PEGylated ePTFE membrane obtained at a 120s plasma treatment, evidencing superhydrophilic surfaces. The PEGylated ePTFE membranes effectively reduced the adsorption of fibrinogen, a sticky protein, up to 18% the limitation of the virgin membrane. Bacterial attachment owed to Gram-positive bacteria (Staphylococcus epidermidis) and Gram-negative bacteria (Escherichia coli) was also effectively inhibited even after a 24h incubation time from a 60s treatment time, corresponding to a grafting yield of 0.10mg/cm2. This work suggests that the anti-baterial ePTFE membranes grafted with PEGylated layer in sufficient surface coverage, high hydration capability, and efficient grafting time via atmospheric plasma treatment present potential for use in membrane bioreactor applications, for which biofouling is a major issue. [Display omitted] •Original study of ePTFE membranes with controllable and efficient surface PEGylation.•Facile approach of surface PEGylation via atmospheric plasma-induced modification.•Well-controlled grafting quality of PEGylated layer on chemical-inert ePTFE membranes.•New physical insights of anti-bacterial performance correlated with protein resistance.•Correlation between biofouling resistance and hydration capability of ePTFE membranes. 出版者： Amsterdam: Elsevier B.V 出版日期： 2013-07-01 出處： Journal of Membrane Science, 2013-07, Vol.439, p.48-57 版權： 2013 Elsevier B.V. 版權： 2014 INIST-CNRS 識別號： ISSN: 0376-7388 識別號： EISSN: 1873-3123 識別號： DOI: 10.1016/j.memsci.2013.03.041 識別號： CODEN: JMESDO
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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