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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of Enduringly Antifouling PVDF Membrane with Compatible Zwitterionic Copolymer via Thermally Induced Phase Separation
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Preparation of Enduringly Antifouling PVDF Membrane with Compatible Zwitterionic Copolymer via Thermally Induced Phase Separation

机译：通过热诱导相分离制备具有两性离子相容性的持久防污PVDF膜

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摘要

The compatible zwitterionic copolymers of poly(methyl methacrylate [3-(methacryloylamino) propyl] dimethyl(3-sulfopropyl) ammonium-hydroxide) p(MMA-MPDSAH) with different MPDSAH ratio are synthesized by free radical polymerization. A serial of copolymers are obtained successfully with narrow molecular weight dispersion. The MPDSAH branch ratio varies from 5% to 20%. It is initially applied to fabricate enduringly antifouling poly(vinylidene fluoride) (PVDF) membrane through a simple approach of blending by thermally induced phase separation (TIPS). The influence of zwitterionic copolymer on membrane morphology is studied by scanning electron microscopy. It was proven effective to improve the hydrophilic property of PVDF membrane as the water contact angles dramatically decreased from 80 degrees to 40 degrees, leading to a significant enhancement of antifouling ability. The absorbed bull serum albumin (BSA) content on modified membranes has cut almost 50%. The residual content of p(MMA-MPDSAH) in membrane is over 40% and able to reach 80% even at vigorous rinsing by controlling copolymer structure. It guarantees the modified membrane has vested enduringly antifouling ability. (C) 2014 Wiley Periodicals, Inc.
机译：通过自由基聚合反应，合成了具有不同MPDSAH比的聚甲基丙烯酸甲酯[3-（甲基丙烯酰基氨基）丙基]二甲基（3-磺丙基）氢氧化铵）p（MMA-MPDSAH）的相容性两性离子共聚物。成功地获得了具有窄分子量分散的一系列共聚物。 MPDSAH的分支比例从5％到20％不等。它最初通过通过热诱导相分离（TIPS）进行混合的简单方法，用于制造持久防污的聚偏二氟乙烯（PVDF）膜。通过扫描电子显微镜研究两性离子共聚物对膜形态的影响。事实证明，由于水接触角从80度急剧减小到40度，PVDF膜的亲水性有效提高，从而显着增强了防污能力。修饰膜上吸收的牛血清白蛋白（BSA）含量减少了近50％。膜中p（MMA-MPDSAH）的残留含量超过40％，即使通过严格控制共聚物结构进行漂洗也能达到80％。它保证了改性膜具有持久的防污能力。 （C）2014威利期刊公司

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