液态金属基导电水凝胶的制备及其性能  

Preparation and Properties of Liquid Metal-Based Conductive Hydrogels

作　　者：刘放 汤力 汤建新 LIU Fang;TANG Li;TANG Jianxin(College of Life Science and Chemistry,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学生命科学与化学学院,湖南株洲412007

出　　处：《包装学报》2025年第2期78-87,共10页Packaging Journal

基　　金：国家自然科学基金资助项目(51774128);湖南省自然科学基金株洲联合基金资助项目(2018JJ4009,2023JJ50184)。

摘　　要：针对传统导电填料与水凝胶基体界面相容性差的问题,通过将柔性液态金属(LM)嵌入由[2-(甲基丙烯酰基氧基)乙基]二甲基-(3-磺酸丙基)氢氧化铵(SBMA)和N-(2-羟乙基)丙烯酰胺(HEAA)共聚形成的水凝胶网络中,构建一类具有超拉伸性、高黏附性和优异传感能力的LM/p(SBMA-co-HEAA)新型导电水凝胶。研究结果表明,通过超声分散形成的LM纳米颗粒,表面具有丰富的羟基氧化镓结构,易于与HEAA中的羟基发生氢键相互作用,提高了导电填料与水凝胶基质界面间的稳定性。此外,基于该导电水凝胶构建的应变传感器无论是在小应变1%,还是大应变150%的条件下都能保持稳定的传感性能。该应变传感器在人体运动检测、智能包装领域具有广阔的应用前景。Aiming at the problem of the poor compatibility of the interface between conventional conductivefiller and hydrogel matrix,theflexible liquid metal(LM)was embedded in a hydrogel network formed by copolymerization of[2-(methylacryloxy)ethyl]dimethyl-(3-propyl sulfonate)ammonium hydroxide(SBMA)and N-(2-hydroxyethyl)acrylamide(HEAA).A class of LM/p(SBMA-co-HEAA)conductive hydrogels with super-stretchability,high adhesion and excellent sensing capability were constructed.The results show that the surface of LM nanoparticles formed by ultrasonic dispersion had a rich structure of hydroxyl gallium oxide,which was easy to cause hydrogen bond interaction with the hydroxyl group in HEAA,and improved the stability of the interface between the conductivefiller and the hydrogel matrix.In addition,the strain sensor based on the conductive hydrogel could maintain stable sensing performance under the condition of small strain 1%or large strain 150%,indicating that the strain sensor has broad application prospects in thefield of human motion detection and intelligent packaging.

关 键 词：水凝胶 柔性液态金属 应变传感器 人体运动检测 智能包装 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置] TB484[自动化与计算机技术—控制科学与工程]