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Study on hydrophilic modification of polyvinyl chloride membrane by amine compounds

Authors： GAO Haifu, LIU Sihua, SHE Jingguo, SONG Ziping, ZHOU Qingying, WANG Xuan, WU Chunrui, LYU Xiaolong

Units： State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China

KeyWords： polyvinyl chloride; ultrafiltration membrane; hydrophilization; membrane fouling; N-Methyl-D-Glucoamine

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2022,42(6):7-13

Abstract：

Convenient and efficient hydrophilization is the key to improve the performance of ultrafiltration membranes. Herein, polyhydroxyamine monomers (N-Methyl-D-Glucoamine, Triisopropanolamine and Bis(2-hydroxymethyl)-tris(hydroxymethyl)- methane) were introduced into PVC casting solution as graft molecules to realize the hydrophilization of the PVC chain in the dissolution process. The effects of monomer structure on the hydrophilicity, mechanical strength and separation properties of PVC membranes were studied. The results showed that the hydrophilicity of the PVC membrane was improved obviously with moderate pore size decrease. Approximately 3.3times flux increase, 26% BSA rejection enhance were obtained simultaneously, with stable mechanical properties.

Funds：

国家自然科学面上基金项目（52170047）；国家自然科学基金重点项目（51638011）

AuthorIntro：

高海富（1995－），男，河南商丘市人，硕士研究生，研究方向为分离膜制备与应用

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