凹凸棒土类流体改性壳聚糖复合电解质膜的制备及性能研究

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关键词：凹凸棒土类流体；壳聚糖；复合电解质膜；电导率；力学性能

中图分类号：TQ051.893 文献标志码：A 文章编号：1003-5168（2025）20-0085-04

DOI： 10.19968/j.cnki.hnkj.1003-5168.2025.20.017

Preparation and Performance of Attapulgite Fluid-Modified Chitosan Composite Electrolyte Membrane

DING Peng DENG Peng （WuhanKingfaSci.&Tech.Co.，Ltd.，Wuhan43010O，China）

Abstract：[Purposes] To address the issues of high cost， insufficient chemical stability，and difficulty in degradation after disposal of traditional electrolyte membranes，the development of high-performance and environmentally friendly electrolyte membranes has become a current research hotspot.[Methods] In this study，environmentally friendly composite electrolyte membranes of attapulgite-like fluid（f-ATP）modified chitosan （QCS）/polyvinyl alcohol （PVA） were prepared by a solution blending method.By regulating the content of f-ATP （ 0%～10% ）， the conductivity， mechanical properties，and sweling behavior of the composite membranes were systematically investigated.[Findings] When the mass ratio of QCS/PVA was 6：4 and the content of f-ATP was 5% ，the conductivity of the composite membrane reached a maximum of 55×10 -3 （2 S⋅cm-1 at 80∘C ， with a tensile strength of 63 MPa.Additionally，the water absorption and swelling rates decreased with the increase off-ATP content.The water absorption rate and sweling rate of the unmodified membrane in water at 80∘C were 198% and 116% ，respectively. All the properties have met the application standards for environmentally friendly electrolyte membranes.[Conclusions] This study explores the performance of f-ATP modified QCS/PVA composite electrolyte membranes， providing new insights for the development of high-performance and environmentally friendly electrolyte membranes.

Keywords： attapulgite fluid; chitosan; composite electrolyte membrane; electrical conductivity; mechanical properties

0 引言

壳聚糖（Chitosan，CS）是由甲壳素脱乙酰化得到的天然多糖1，分子链含氨基和羟基，具有良好的生物相容性和可降解性。（剩余3995字）