膜科学与技术

PVC-P(VC-VAC)-MBS共混超滤膜的制备及其性能

作者：程亮，王骥，龚旻，许振良

单位：化学工程联合国家重点实验室，华东理工大学膜科学与工程研发中心，上海200237

关键词：聚氯乙烯膜；氯醋树脂；MBS；非溶剂致相转化法

出版年,卷(期):页码： 2016,36(3):8-12

摘要：

本文利用非溶剂致相转化法(NIPS)制备了PVC-P(VC-VAC)-MBS平板和中空纤维超滤膜，讨论了氯乙烯-醋酸乙烯共聚物[P(VC-VAC)]的含量对膜机械性能、亲水性、纯水通量及截留率等性能的影响。同时，通过添加抗冲改性剂甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物（MBS），考察了MBS对PVC平板超滤膜机械性能的影响。实验结果表明：当铸膜液含4% P(VC-VAC)时，亲水性最好，纯水通量可由42.5 L/(m2•h•0.1MPa)增大到155 L/(m2•h•0.1MPa)。同时，膜的机械性能明显增强，P(VC-VAC)和MBS树脂可以有效地改善PVC超滤膜的亲水性和机械性能，是优良的PVC膜共混改性材料。

In this paper, PVC-P(VC-VAC)-MBS flat and hollow fiber ultrafiltration (UF) membranes were prepared by non-solvent induced phase separation (NIPS). With the changes of vinyl chloride-vinyl acetate copolymer [P(VC-VAC)] content, the mechanical and hydrophilic properties, water flux and rejection rate were investigated. Then, methyl methacrylate-butadiene-styrene copolymer (MBS) were added in the dope solution, their impacts on the mechanical properties of PVC flat membrane were examined. The experimental results show that: the best performance can be get when the P(VC-VAC) content is 4%. The pure water flux was increased from 42.5 L/(m2•h•0.1MPa) to 155 L/(m2•h•0.1MPa). At the same time, the mechanical properties of the membranes were significantly enhanced. P(VC-VAC) and MBS are excellent modified material. They could significantly improve the hydrophilic and mechanical properties of the PVC membrane.

程亮(1977-)，男，北京市人，博士研究生，主要从事膜制备及应用研究工作。

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