Ultrafiltration membranes coated with amphiphilic copolymers containing superhydrophilic zwitterionic moieties and hydrophobic POSS moieties (PSM‐coated membranes) are prepared. The free radical polymerization of 2‐(dimethylamino)ethyl methacrylate (DMAEMA) and 3‐(3,5,7,9,11,13,15‐heptaisobutylpentacyclo[9.5.1.1^3,9.1^5,15.1^7,13]octasiloxane‐1‐yl)propyl methacrylate (MAPOSS) monomers is used to prepare a series of copolymers containing different compositions of DMAEMA and MAPOSS units (PDMs). The DMAEMA units in the PDM‐coated membranes are subsequently converted to sulfobetaine methacrylate (SBMA) units using 1,3‐propane sultone (post‐zwitterionization) to give the PSM‐coated membranes. The PSM‐coated membranes show improved fouling resistance/release properties, compared with a neat polysulfone (PSf) membrane. The improved fouling resistance properties of the PSM‐coated membranes are attributed to the superhydrophilic zwitterionic moieties, which form a hydration layer on the membrane surface via electrostatic interactions between the zwitterions and water molecules. Moreover, the total surface energy (γ_S) value of the PSM‐coated membrane is smaller than that of the PSf membrane due to the hydrophobic POSS moieties. This results in the superior fouling release properties of the PSM‐coated membranes.

中文翻译：

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包含超亲水两性离子和疏水POSS部分的两亲共聚物包覆的超滤膜，具有改善的防污/释放特性

准备了用两亲共聚物包被的超滤膜，该两亲共聚物包含超亲水性两性离子部分和疏水性POSS部分（PSM涂层膜）。甲基丙烯酸2-（二甲氨基）乙酯（DMAEMA）和3-（3,5,7,9,11,13,15-庚异丁基五环[9.5.1.1 ^3,9 .1 ^5,15 .1 ^{7， 13}甲基丙烯酸八硅氧烷-1-基丙基丙酯（MAPOSS）单体用于制备一系列共聚物，这些共聚物包含不同组成的DMAEMA和MAPOSS单元（PDM）。PDM涂层膜中的DMAEMA单元随后使用1,3-丙烷磺酸内酯（两性离子化后）转化为甲基磺基甜菜碱甲基丙烯酸酯（SBMA）单元，得到PSM涂层膜。与纯聚砜（PSf）膜相比，涂有PSM的膜显示出改善的耐污垢/释放性能。涂有PSM的膜的抗污垢性能提高归因于超亲水性两性离子部分，该两性离子通过两性离子与水分子之间的静电相互作用在膜表面形成水合层。此外，总的表面能（γ_小号）由于疏水的POSS部分，PSM涂层膜的值小于PSf膜的值。这导致PSM涂层膜具有优异的结垢释放性能。