Improved antifouling property of zwitterionic ultrafiltration membrane composed of acrylonitrile and sulfobetaine copolymer
2006; Elsevier BV; Volume: 285; Issue: 1-2 Linguagem: Inglês
10.1016/j.memsci.2006.08.035
ISSN1873-3123
AutoresQiang Sun, Yanlei Su, Xiaole Ma, Yanqiang Wang, Zhongyi Jiang,
Tópico(s)Dendrimers and Hyperbranched Polymers
ResumoA random copolymer poly((2-dimethylamino ethyl methacrylate)-acrylonitrile) (PAN–DMAEMA) was synthesized by copolymerization of 2-dimethylamino ethyl methacrylate with acrylonitrile through the water phase suspension polymerization method. The PAN–DMAEMA copolymer was then reacted with 1,3-propane sultone (PS) to convert the DMAEMA group into zwitterionic N , N -dimethyl- N -methacryloxyethyl- N -(3-sulfopropyl) (DMMSA) functional group. The as-prepared PAN-based zwitterionic copolymer was blended with polyacrylonitrile to fabricate ultrafiltration membranes. Ultrafiltration experiments revealed that membrane fouling , especially irreversible membrane fouling , was remarkably reduced due to the incorporation of zwitterionic DMMSA groups. For the PAN-based zwitterionic blend membrane with a DMMSA content of 5.8 mol%, the flux recovery ratio could reach as high as 95% under simple water flushing.
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