Antifouling properties of poly(vinyl chloride) membranes modified by amphiphilic copolymers P(MMA-b-MAA)
Antifouling properties of poly(vinyl chloride) membranes modified by amphiphilic copolymers P(MMA-b-MAA)
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两亲性共聚物P(MMA-b-MAA)改性聚氯乙烯膜的防污性能
DOI：
10.1007/s10118-012-1153-z
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发表时间：
2012-04-01
影响因子：
4.3
通讯作者：
Zhu, Li-ping
中科院分区：
文献类型：
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作者：
Liu, Wei-dong;Zhang, Yong-hua;Zhu, Li-ping
采用原子转移自由基聚合法，通过改变聚甲基丙烯酸(PMAA)的链长，合成了三种规整的聚甲基丙烯酸甲酯-b-甲基丙烯酸(P(MMA-b-MAA))两嵌段共聚物。将这些共聚物与聚氯乙烯共混，通过相转化法制备了多孔膜。用扫描电子显微镜(SEM)观察了膜的形貌，用X射线光电子能谱(XPS)测定了膜表面化学成分的变化。通过静态和动态蛋白质吸附实验评价了共混膜的抗污染性能。结果表明，PMAA臂长度越长，共混膜对蛋白质的静态吸附越低，水通量越大，蛋白质溶液通量恢复越好。
Three well-defined diblock copolymers of poly(methyl methacrylate-b-methacrylic acid) (P(MMA-b-MAA)) were synthesized using atom transfer radical polymerization method and varying poly(methacrylic acid) (PMAA) chain lengths. These copolymers were blended with PVC to fabricate porous membranes via phase inversion process. Membrane morphologies were observed by scanning electron microscopy (SEM), and chemical composition changes of the membrane surfaces were measured by X-ray photoelectron spectroscopy (XPS). Static and dynamic protein adsorption experiments were used to evaluate antifouling properties of the blend membranes. It was found that, the blend membranes containing longer PMAA arm length showed lower static protein adsorption, higher water permeation flux and better protein solution flux recovery.