Surface functionalization of TFC FO membranes with zwitterionic polymers: Improvement of antifouling and salt-responsive cleaning properties
Surface functionalization of TFC FO membranes with zwitterionic polymers: Improvement of antifouling and salt-responsive cleaning properties
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使用两性离子聚合物对 TFC FO 膜进行表面功能化：提高防污和盐响应清洁性能
DOI：
10.1016/j.memsci.2017.09.044
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发表时间：
2017-12
影响因子：
9.5
通讯作者：
Dongmei Liu
中科院分区：
文献类型：
--
作者：
Xinyu Zhang;Jiayu Tian;Shanshan Gao;Wenxin Shi;Zhongbiao Zhang;Fuyi Cui;Shuming Zhang;Shengnan Guo;Xiaonan Yang;Hui Xie;Dongmei Liu
在本工作中，通过ATRP反应将聚甲基丙烯酸磺胺(PSBMA)刷接枝到商业正向渗透(FO)膜表面，制备了盐响应型薄膜复合正渗透(FO)膜，用于油水乳状液的深度处理。通过改变聚合时间，得到了最佳的改性膜(TFC-PSBMA)，该膜具有超亲水和超低油附着力。使用10000ppm油/水乳状液的动态污染实验表明，TFC-PSBMA膜具有优异的抗污染能力，表现为与TFC控制膜相比，水通量下降更小。多循环FO污染试验表明，长期使用盐洗可显著减轻TFC-PSBMA膜的不可逆膜污染。PSBMA刷子的盐敏特性被认为是从膜表面释放油污的驱动力。
In this work, a salt-responsive thin film composite (TFC) forward osmosis (FO) membrane has been prepared by grafting poly(sulfobetaine methacrylate) (PSBMA) brushes on a commercial FO membrane surface via an ATRP reaction for advanced treatment of oil/water emulsions. By varying polymerization time, the optimum modified membrane (i.e. TFC-PSBMA) was obtained, which exhibited superhydrophilic and ultralow oil-adhesion properties. Dynamic fouling experiments using a feed solution of 10,000 ppm oil/water emulsion demonstrated the superior anti-fouling ability of the TFC-PSBMA membrane, as displayed by the lower water flux decline compared to the TFC-control membrane. Furthermore, multi-cycle FO fouling tests showed that the irreversible membrane fouling of the TFC-PSBMA membrane can be significantly alleviated by using salt cleaning in long-term use. The salt-responsive properties of the PSBMA brushes were considered to provide a driving force for the release of oil foulants from the membrane surface.
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影响因子：
12.8
作者：
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