Zwitterionic Polymer Brush Grafted on Polyvinylidene Difluoride Membrane Promoting Enhanced Ultrafiltration Performance with Augmented Antifouling Property

被引:51
作者
Chiao, Yu-Hsuan [1 ,2 ,3 ,4 ]
Chen, Shu-Ting [1 ,2 ]
Sivakumar, Mani [1 ]
Ang, Micah Belle Marie Yap [3 ,4 ]
Patra, Tanmoy [5 ]
Almodovar, Jorge [2 ]
Wickramasinghe, S. Ranil [2 ]
Hung, Wei-Song [1 ,3 ,4 ]
Lai, Juin-Yih [1 ,3 ,4 ]
机构
[1] Natl Taiwan Univ Sci & Technol, Adv Membrane Mat Res Ctr, Grad Inst Appl Sci & Technol, Taipei 10607, Taiwan
[2] Univ Arkansas, Dept Chem Engn, Fayetteville, AR 72701 USA
[3] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Chungli 32023, Taiwan
[4] Chung Yuan Christian Univ, Dept Chem Engn, Chungli 32023, Taiwan
[5] Univ Arkansas, Dept Biomed Engn, Fayetteville, AR 72701 USA
基金
美国国家科学基金会;
关键词
zwitterionic; PVDF membrane; poly (sulfobetaine methacrylate); ultrafiltration; antifouling; UV grafting; GRAPHENE OXIDE; PVDF MEMBRANE; WATER; RESISTANCE; COPOLYMER; HYDRATION; DESIGN;
D O I
10.3390/polym12061303
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Superhydrophilic zwitterions on the membrane surface have been widely exploited to improve antifouling properties. However, the problematic formation of a <20 nm zwitterionic layer on the hydrophilic surface remains a challenge in wastewater treatment. In this work, we focused on the energy consumption and time control of polymerization and improved the strong hydrophilicity of the modified polyvinylidene difluoride (PVDF) membrane. The sulfobetaine methacrylate (SBMA) monomer was treated with UV-light through polymerization on the PVDF membrane at a variable time interval of 30 to 300 s to grow a poly-SBMA (PSBMA) chain and improve the membrane hydrophilicity. We examined the physiochemical properties of as-prepared PVDF and PVDF-PSBMA(x)using numeric analytical tools. Then, the zwitterionic polymer with controlled performance was grafted onto the SBMA through UV-light treatment to improve its antifouling properties. The PVDF-PSBMA(120s)modified membrane exhibited a greater flux rate and indicated bovine serum albumin (BSA) rejection performance. PVDF-PSBMA(120s)and unmodified PVDF membranes were examined for their antifouling performance using up to three cycles dynamic test using BSA as foulant. The PVDF-modified PSBMA polymer improved the antifouling properties in this experiment. Overall, the resulting membrane demonstrated an enhancement in the hydrophilicity and permeability of the membrane and simultaneously augmented its antifouling properties.
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页数:12
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