期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 51, 期 7, 页码 1189-1198出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2016.1146299
关键词
Anti-fouling; carboxybetaine; hydrophilic; PVDF membrane; zwitterion
资金
- National Natural Science Foundation of China [21374078, 21174103]
- Yunnan Applied Basic Research Projects of China [2015FD047]
This work describes the synthesis and anti-fouling properties of poly(vinylidene fluoride) membrane, grafted with carboxybetaine-based zwitterions. An amphiphilic copolymer, poly(vinylidene fluoride)-graft- poly(N,N-dimethylamino-2-ethylmethacrylate) (PVDF-g-PDMAEMA), was synthesized by radical graft copolymerization, followed by casting the copolymer into a flat membrane, by an immersed phase inversion method. PVDF-g-PDMAEMA membrane was reacted with sodium chloroacetate (SCA) to yield a carboxybetaine-based zwitterionic surface. The membrane showed significantly enhanced hydrophilicity, due to the hydration ability of carboxybetaine-based zwitterions, which inhibited protein adsorption. Compared to pristine PVDF-g-PDMAEMA membrane, carboxybetaine-based zwitterionic membrane exhibited a higher flux recovery in the cyclic filtration.
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