期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 96, 期 -, 页码 639-651出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2019.01.001
关键词
Polytetrafluoroethylene flat membrane; Poly(gallic acid); Chitosan; Hydrophilicty; Antifouling property; Antibacterial property
资金
- Fund for the Excellent Postgraduate Thesis Program of Zhejiang Sci-Tech University [2018-XWLWPY-B-03-07, 2018-XWLWPY-M-03-06]
- National Natural Science Foundation of China [21706238]
To improve antifouling and antibacterial property of Polytetrafluoroethylene (PTFE) flat microfiltration (MF) membrane, a novel and facile method was developed to modify the membrane via the polymer of Laccase-catalyzed self-polymerization of Gallic acid (GAL) and cross-linked to Chitosan (CS) using Citric acid (CA) as a cross-linker, and then surface micro/nanostructures treated by 3-Triethoxysilylpropylamine (KH550). The surface chemical composition, surface morphology, hydrophilicity, antifouling and antibacterial property of the PTFE flat membrane were investigated by ATR-FTIR, XPS, FESEM, water contact angle (WCA), bovine serum albumin (BSA) filtration and antibacterial measurements, respectively. After using this low-cost and simple modification method, the PTFE flat membranes were endowed with excellent hydrophilicity, antifouling and antibacterial properties. Finally, the surface stability of the modified membranes were studied and the modified membrane showed excellent stability under pH = 3-12. (C) 2019 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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