文献类型：期刊文献

中文题名：可黏附的自修复导电水凝胶的制备与性能

英文题名：Preparation and Properties of Adhesive Self-Healing Conductive Hydrogel

作者：刘延源[1];赵博文[1];张静[2];张琰[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]上海市纳米科技与产业发展促进中心,上海200237

年份：2024

卷号：37

期号：5

起止页码：408

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;Scopus;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：国家自然科学基金(52073093)。

语种：中文

中文关键词：水凝胶;黏附性;自修复;导电性;丙烯酰胺

外文关键词：hydrogel;adhesion;self-healing;conductivity;acrylamide

摘要：以丙烯酰胺(AM)、氧化海藻酸钠(OSA)和聚多巴胺改性聚吡咯(PDA-PPy)为原料,制备了一种兼具黏附性能、自修复性能和导电性能的多功能PAM/OSA/PDA-PPy水凝胶(简称PODY)。采用傅里叶变换红外光谱、核磁共振氢谱和扫描电子显微镜对OSA、PDA-PPy和PODY水凝胶进行结构分析,通过万能电子试验机、旋转流变仪、四探针测试仪等对其力学性能、黏附性能、自修复性能和导电性能进行表征。结果表明:PODY水凝胶的断裂伸长率最高可达928%,拉伸强度最高达194 kPa;对猪皮、玻璃和塑料的最大黏附强度分别为9.0、17.6 kPa和22.8 kPa,且经过3次循环黏附后仍然可以保持较好的黏附强度;PODY水凝胶可以形成稳定的三维网络且自修复性能良好;四探针测试PODY水凝胶的最大电导率达到0.248 S/m。
By using acrylamide(AM),sodium oxyalgae(OSA)and polydopamine-modified polypyrrole(PDA-PPy)as raw materials,a multifunctional hydrogel PAM/OSA/PDA-PPy(PODY)with adhesion,self-healing and conductivity was prepared.The aldehyde group of OSA reacts with the amino group of AM to form imine bond.Because PDA-PPy carries a large number of catechol groups and conductive groups,it endows hydrogels with good adhesion and conductivity.At the same time,more hydrogen bonds are created inside the hydrogel.The structures of OSA,PDA-PPy and PODY hydrogels were analyzed by Fourier transform infrared spectroscopy,hydrogen nuclear magnetic resonance spectroscopy(1H-NMR)and scanning electron microscopy.Their mechanical properties,adhesion properties,self-healing properties and electrical conductivity were characterized by universal electronic testing machine,rotary rheometer and four-probe tester.Results show that the elongation at break of PODY hydrogel is up to 928%,and the tensile strength is up to 194 kPa.The maximum adhesion strength of the hydrogel on pig skin,glass and plastic is 9.0,17.6 kPa and 22.8 kPa,respectively,and good adhesion strength is still maintained after three cycles of adhesion.PODY hydrogel can form a stable three-dimensional network and has good self-healing performance.The maximum conductivity of PODY hydrogel is 0.248 S/m.It lays a good foundation for its application in the field of wearable sensing.