基于掩蔽策略的金属配位水凝胶的制备及其在柔性应力/应变传感领域的潜在应用  

Preparation of metal coordination hydrogels based on screening strategy and their potential applicationsin the field of flexible stress/strain sensing

作　　者：官小玉 郑赛 张炳原 朱晏霞 李东平 韩庆鑫 GUAN Xiao-yu;ZHENG Sai;ZHANG Bing-yuan;ZHU Yan-xia;LI Dong-ping;HAN Qing-xin(College of Bioresources Chemical and Materials Engineering,Key Laboratory of Leather Cleaner Production of China National Light Industry,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院中国轻工业皮革清洁生产重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2024年第2期25-33,共9页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(22308210);陕西省教育厅专项科研项目(23JK0350);陕西科技大学博士科研启动基金项目(2019BJ-44)。

摘　　要：研究和发展高强高韧金属配位水凝胶(MC-HG)用于柔性电子传感已成为先进功能高分子材料领域的国际性前沿课题,具有广泛的应用意义和重要的科学价值.然而,传统浸泡法由于金属离子的渗透与结合难以调控,导致力学性能较弱.本论文提出基于乙酸钠(SA)的掩蔽策略,促使金属配合物先渗透后结合,从而得到均质的金属配位水凝胶(Fe-HG SA),其断裂强度与韧性(1.546 MPa/2.139 MJ/m^(3))远高于传统浸泡法(0.832 MPa/0.919 MJ/m^(3))以及常用的水溶液重新排列方法(1.126 MPa/1.352 MJ/m^(3)).基于优异的力学性能以及良好的导电性,Fe-HG SA可潜在应用于柔性应力/应变传感领域.The research and development of high-strength and high-toughness metal coordination hydrogels(MC-HG)for flexible electronic sensing has become an international frontier in the field of advanced functional polymer materials,which has wide application significance and important scientific value.However,the traditional soaking method is difficult to control the permeation and combination of metal ions,resulting in weak mechanical properties.In this paper,a screening strategy based on sodium acetate(SA)was proposed to promote the metal complex permeation first and then combination with functional ligands,thus obtaining a homogeneous metal coordination hydrogel(Fe-HG SA),whose breaking strength and toughness(1.546 MPa/2.139 MJ/m^(3))were much higher than those of traditional soaking method(0.832 MPa/0.919 MJ/m^(3))and common aqueous solution rearrangement method(1.126 MPa/1.352 MJ/m^(3)).Due to its excellent mechanical properties and good electrical conductivity,Fe-HG SA has potential applications in the field of flexible force sensors.

关 键 词：金属配位水凝胶 柔性电子 力学性能 

分 类 号：X794[环境科学与工程—环境工程]