聚苯胺纳米管改性聚酰胺纳滤膜的制备研究

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摘要针对纳滤膜水通量与选择性相互制约的"trade-off"效应现象,以聚醚砜(PES)超滤膜为支撑层,通过界面聚合制备了聚苯胺纳米管改性的高通量聚酰胺纳滤膜。聚苯胺纳米管的空腔可以在膜内构建更多水通道,促进水分子传递。同时,聚苯胺纳米管可以与均苯三甲酰氯发生反应,形成了较强的共价键,优化填充材料与高分子基质的界面相容性。结果表明,与空白聚酰胺纳滤膜相比,当聚苯胺纳米管填充量为1.5 g·m^-2时,纳滤膜水通量由12.5 L·m^-2·h^-1·bar^-1上升至21 L·m^-2·h^-1·bar^-1,但对硫酸钠的截留仍然高达94.3%。

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	王重斌
	张文双

关键词：聚苯胺纳米管混合基质纳滤膜高通量

Abstract： In view of the trade-off effect between permeability and selectivity of nanofiltration membrane, the polyaniline nanotubes modified polyamide nanofiltration membrane with enhanced water flux was prepared via interfacial polymerization on a polyether sulfone (PES) substrate. The tube structure of polyaniline could provide more channels for water pass through. The reaction between polyaniline nanotubes and trimesoyl chloride could form strong covalent bonds which was beneficial for the interface compatibility of filler materials with polymer matrix. The results indicated that the membrane prepared with a nanotubes loading of 1.5 g·m^-2 exhibited an increased water flux form 12.5 L·m^-2·h^-1·bar^-1 to 21 L·m^-2·h^-1·bar^-1 compared to the polyamide membrane while the rejection to Na₂SO₄ was up to 94.3%.

Keywords： polyaniline nanotubes mixed matrix nanofiltration membrane high water flux

Received 2022-12-09;

Fund:国家自然科学基金(21908130)。

About author: 王重斌(1986-),男,博士,讲师,现从事膜分离方面的研究。

引用本文:

王重斌, 张文双.聚苯胺纳米管改性聚酰胺纳滤膜的制备研究[J]. 化学工业与工程, 2023,40(3): 55-62

WANG Chongbin, ZHANG Wenshuang.Preparation of polyaniline nanotubes modified polyamide nanofiltration membrane[J]. Chemcial Industry and Engineering, 2023,40(3): 55-62

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