膜科学与技术

温度响应性多孔膜的构建及分离性能研究

作者：杨培元，董亮亮，王逸，施冬健，倪忠斌，陈明清

单位：江南大学合成与生物胶体教育部重点实验室，化学与材料工程学院，无锡 214122

关键词： PET支撑膜；聚多巴胺；温度响应；分离

出版年,卷(期):页码： 2021,41(4):49-56

摘要：

通过“graft-to”策略将巯基封端的聚N-异丙基丙烯酰胺(PNIPAM-SH)接枝到涂覆有聚多巴胺（PDA）的聚酯（PET）支撑膜上，制备具有温度响应性的多孔分离膜。通过核磁共振波谱仪（1H NMR）和紫外可见分光光度计（UV-vis）研究了PNIPAM的结构、分子量等与温度响应性能之间的内在联系。结果表明，以分子量为8400 g/mol的PNIPAM聚合物构筑的多孔膜的温度响应性最为明显，对油水混合物的分离效果最优，达95%以上。制备的膜对水包油乳液也展现出良好的分离性能有望应用于油水分离领域。

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.

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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