基于羧甲基瓜尔豆胶/聚丙烯酰胺的双网络水凝胶传感器  

A dual-network hydrogel sensor based on carboxymethyl guar gum and polyacrylamide

作　　者：杨梦梦 蒋晨光 吴德峰[1] YANG Mengmeng;JIANG Chenguang;WU Defeng(School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州大学化学化工学院,江苏扬州225009

出　　处：《扬州大学学报(自然科学版)》2025年第1期17-25,共9页Journal of Yangzhou University:Natural Science Edition

基　　金：国家自然科学基金资助项目(52373023)。

摘　　要：制备了一种硼砂交联的羧甲基瓜尔豆胶/聚丙烯酰胺双网络水凝胶(CGPB)传感器。该水凝胶通过硼砂交联羧甲基瓜尔豆胶,在聚丙烯酰胺主网络中构建了次级网络,实现了两种网络的互穿,显著提升了其力学性能和形变响应能力,最大拉伸应变可达3900%。CGPB水凝胶兼具应变传感和温度传感能力,能够响应形变和温度变化引起的电阻变化,实现对人体运动和环境温度的实时监测。其应变灵敏度系数可达1.35,响应时间仅为203 ms。此外,羧甲基瓜尔豆胶来源广泛、成本低廉,且具有良好的生物相容性和可降解性,为柔性传感器的应用提供了新的选择。研究结果为开发高性能柔性传感器、拓展羧甲基瓜尔豆胶的应用提供了新的思路和方法。In this paper,a dual-network hydrogel sensor based on a boric acid crosslinked carboxym-ethyl guar gum and polyacrylamide(CGPB)is successfully fabricated.This hydrogel is constructed by crosslinking carboxymethyl guar gum with borax to form a secondary network within the main network of polyacrylamide,achieving interpenetration between the two networks.The mechanical properties and deformation capabilities of the hydrogel are significantly improved,and the maximum tensile strain is up to 3900%.Moreover,the CGPB hydrogel has both strain-sensing and tempera-ture-sensing capabilities,which are capable of responding to resistance changes caused by the deformation and temperature variations.This allows for real-time monitoring of human motion and environmental temperatures,with a strain sensitivity coefficient of up to 1.35 and a response time of only 203 ms.In addition,carboxymethyl guar gum is widely available,low-cost,and has good biocompatibility and biodegradability,which provides new options for the application of flexible sensors.This study provides new insights and methods for the development of high-performance flexible sensors and the expansion of applications of carboxymethyl guar gum.

关 键 词：羧甲基瓜尔豆胶 硼酸酯键 互穿网络 离子水凝胶 传感器 

分 类 号：O636.1[理学—高分子化学]