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Construction of Temperature-responsive Porous Membrane and Research on Separation Performance

Authors： YANG Peiyuan, DONG Liangliang, WANG Yi, SHI Dongjian, NI Zhongbin, CHEN Mingqing

Units： (Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China

KeyWords： PET support membrane; polydopamine; temperature-responsive; separation

ClassificationCode：TQ028.4

year,volume(issue):pagination： 2021,41(4):49-56

Abstract：

The sulfhydryl-terminated poly(N-isopropylacrylamide)(PNIPAM-SH) was grafted onto a polyester(PET) support membrane coated with polydopamine (PDA) through the “graft-to” strategy to prepare a temperature-responsive porous separation membrane. The internal relationship between the structure, molecular weight of PNIPAM and temperature response performance was studied by nuclear magnetic resonance spectrometer (1H NMR) and ultraviolet-visible spectrophotometer (UV-vis). The results show that the temperature responsiveness of the porous membrane constructed by the PNIPAM polymer with a molecular weight of 8400 g/mol is the most obvious, and the separation effect of the oil-water mixture is the best, reaching more than 95%. The prepared membrane also shows good separation performance for oil-in-water emulsions, which can be expected to be applied in the field of oil-water separation.

Funds：

江南大学研究生科研与实践创新计划项目（JNSJ19_003）资助课题

AuthorIntro：

杨培元（1996-），男，福建泉州人，硕士，主要从事功能膜材料研究。JN6180608021@163.com

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