羧甲基瓜尔胶/聚乙烯醇/聚丙烯酰胺形状记忆导电水凝胶的制备及性能研究  

Preparation and Properties of Carboxymethyl Guar/Polyvinyl Alcohol/Polyacrylamide Shape Memory Conducting Hydrogel

作　　者：唐言 严娇 王犁[1,2] 安鹏 颜贵龙 来婧娟 李振宇 周利华[1,2] 武元鹏[1,2] TANG Yan;YAN Jiao;WANG Li;AN Peng;YAN Guilong;LAI Jingjuan;LI Zhenyu;ZHOU Lihua;WU Yuanpeng(The Center of Functional Materials for Working Fluids of Oil and Gas Field,School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China;Sichuan Engineering Technology Research Center of Basalt Fiber,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学新能源与材料学院,油气田工作液功能材料研究中心,成都610500 [2]西南石油大学油气藏地质及开发工程全国重点实验室,四川省玄武岩纤维复合材料开发及应用工程技术研究中心,成都610500

出　　处：《材料导报》2025年第3期238-244,共7页Materials Reports

基　　金：国家自然科学基金(52173301);四川省科技厅项目(2024ZYD0011)。

摘　　要：通过共混和冻融的方法制备了羧甲基瓜尔胶(CMGG)/聚乙烯醇(PVA)/聚丙烯酰胺(PAM)复合导电水凝胶,并用万能拉伸试验机、电化学工作站等仪器手段对复合导电水凝胶的力学性能、形状记忆功能以及导电性能进行了一系列表征与研究。利用CMGG/PVA/PAM之间的氢键作用制备的复合导电水凝胶的拉伸强度可达0.38 MPa。NaCl的加入赋予了水凝胶优异的导电性能,CMGG的加入也使水凝胶具有形状记忆以及离子印迹的功能,且提高了水凝胶的电导率(6.19 ms·cm^(-1))。同时,利用该水凝胶制备了一种简单的应变传感器,其可有效地检测人体的微小运动。传感器还具有良好的压缩应变敏感性,可以实现在水凝胶上的信息加密及解密功能。Carboxymethyl guar gum(CMGG)/polyvinyl alcohol(PVA)/polyacrylamide(PAM)composite conductive hydrogel was prepared by blen-ding and freeze-thawing method.The mechanical properties,shape memory function and conductivity of composite conductive hydrogels were characterized and studied by means of universal tensile testing machine,electrochemical workstation and other instruments.The tensile strength of the composite conductive hydrogel prepared by the hydrogen bond between CMGG/PVA/PAM can reach 0.38 MPa.The addition of NaCl endows the hydrogels with excellent electrical conductivity,and the addition of CMGG also enables the hydrogels to have shape memory and ion imprinting functions,and improves the conductivity of the hydrogels(6.19 ms·cm^(-1)).At the same time,a simple strain sensor was prepared by using the hydrogel,which can be effectively used to detect the tiny movement of human body.The sensor also has good compressive strain sensitivity,which can realize the information encryption and decryption function on the hydrogel.

关 键 词：羧甲基瓜尔胶(CMGG) 聚乙烯醇(PVA) 导电水凝胶 形状记忆 应变传感器 

分 类 号：TB33[一般工业技术—材料科学与工程]