聚乙烯醇导电水凝胶制备的综合实验设计  

Design of a Comprehensive Experiment for Preparation of Polyvinyl Alcohol Conductive Hydrogels

作　　者：张云飞[1] 孙富昌 郭明明 杜飞鹏[1] 郭庆中[1] 李亮[1] 鄢国平[1] ZHANG Yun-fei;SUN Fu-chang;GUO Ming-ming;DU Fei-peng;GUO Qing-zhong;LI Liang;YAN Guo-ping(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430205

出　　处：《高分子通报》2021年第4期58-64,共7页Polymer Bulletin

基　　金：湖北省荆楚卓越计划项目(鄂教高办函[2017]6号);武汉工程大学教研项目(X2018016,X2018017)。

摘　　要：设计了聚乙烯醇(PVA)导电水凝胶制备的综合实验。实验设计包括:前期文献调研、聚3,4-乙撑二氧噻吩/聚苯乙烯磺酸盐(PEDOT∶PSS)掺杂PVA水凝胶(PEDOT∶PSS/PVA)的制备、水凝胶结构表征与性能测试等部分。采用傅里叶变换红外光谱、扫描电子显微镜分别表征了PEDOT∶PSS/PVA的组成与形貌;采用数字万用表表征了PEDOT∶PSS/PVA的电导率;采用电子万能试验机表征了PEDOT∶PSS/PVA的机械性能及力敏性能。数据表明:PEDOT∶PSS/PVA具有良好的机械性能、导电性及力敏性能,且随着PEDOT∶PSS掺杂量的增加,PEDOT∶PSS/PVA的导电性、机械性能及力敏性能有所增加。教学实践表明,综合实验的开展有利于提高学生综合运用材料、化学专业知识的能力,在锻炼学生动手能力的同时,培养其分析问题、解决问题的能力。A comprehensive experiment of preparation of polyvinyl alcohol(PVA) based conductive hydrogel is designed. The experimental design includes the preliminary investigation, the preparation of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)(PEDOT∶PSS) doped PVA hydrogels(PEDOT∶PSS/PVA), structure characterization and performance test. The composition and morphology of PEDOT∶PSS/PVA were characterized by Fourier transform infrared spectroscopy(FTIR) and scanning electron microscope(SEM), respectively. The conductivity of PEDOT∶PSS/PVA was characterized by digital multimeter, and the mechanical properties and strain sensitivity of PEDOT∶PSS/PVA were characterized by universal tensile machine. The results showed that the PEDOT∶PSS/PVA had good mechanical properties, electrical conductivity and strain sensitivity. With the increase of PEDOT∶PSS doping, mechanical properties, the electrical conductivity and strain sensitivity of PEDOT∶PSS/PVA increased. The teaching practice has shown that the designed comprehensive experiment is beneficial for improving students’ ability to comprehensively apply materials and chemistry knowledge, as well as students’ ability to analyze and solve problems besides operational skills.

关 键 词：PEDOT PSS/PVA 机械性能 导电性能 力敏性能 实验设计 

分 类 号：G642[文化科学—高等教育学] O648.17-4[文化科学—教育学]