金属离子配位交联的热敏双网络水凝胶环境响应性黏附行为  

Environmental Responsive Adhesion Behavior of Metal Ion Crosslinked Thermosensitive Double Network Hydrogel

作　　者：陈顺兰 许丹妮 李学锋 彭格格[1] 黄以万 龙世军 张高文 CHEN Shunlan;XU Danni;LI Xuefeng;PENG Gege;HUANG Yiwan;LONG Shijun;ZHANG Gaowen(School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China;Hubei Longzhong Laboratory,Xiangyang 441000,China;Hubei Key Laboratory of Green Light Industry Materials,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学材料与化学工程学院,武汉430068 [2]湖北隆中实验室,襄阳441000 [3]湖北工业大学绿色轻工材料湖北省重点实验室,武汉430068

出　　处：《高等学校化学学报》2023年第8期182-192,共11页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:52073083);湖北隆中实验室自主创新项目(批准号:2022ZZ-16)资助.

摘　　要：采用“一锅法”制备了具有环境响应性黏附的热敏双网络水凝胶(TDN).研究结果表明,TDN_(87.5)水凝胶的剪切粘接强度最佳(26.53 kPa).进一步引入多种价态的金属离子配位交联TDN_(87.5)热敏水凝胶,拉伸强度提高1倍以上(由TDN_(87.5)水凝胶的172.46 kPa提高至TDN_(87.5)‐Zr水凝胶的373.72 kPa),相应剪切粘接强度提高约16倍(由26.53 kPa提高至447.29 kPa).通过调整浸泡Zr^(4+)溶液的浓度、时间和温度等,得到剪切粘接强度最优(552.62 kPa)的TDN_(87.5)‐Zr_(0.3)@90℃水凝胶,并对多种方法调控TDN热敏水凝胶黏附行为的原理展开讨论,为开发同时具有高强度、高界面黏附性能和可控形状变形的新型水凝胶提供了一个新的思路.A thermally responsive double-network hydrogel(TDN)with environmental response adhesion was prepared by the“one-pot method”,and it was found that TDN_(87.5) hydrogel had the best shear bond strength(26.53 kPa).Further introducing metal ion coordination crosslinking TDN_(87.5) thermal hydrogels with multiple valence states,it was found that the tensile strength increased by more than 1 times(from 172.46 kPa of TDN_(87.5) hydrogel to 373.72 kPa of TDN_(87.5)-Zr hydrogel),and the corresponding shear bond strength increased by about 16 times(from 26.53 kPa to 447.29 kPa).Furthermore,by adjusting the concentration,time and temperature of soaking Zr^(4+),a TDN_(87.5)-Zr_(0.3)@90℃hydrogel with the best shear adhesion strength(552.62 kPa)was obtained,and the principle of regulating the adhesion behavior of TDN thermal hydrogel by multiple methods was discussed,which provided a new idea for the development of a new hydrogel with high strength,high interfacial adhesion performance and controllable shape deformation.

关 键 词：热敏水凝胶 金属离子配位 黏附性能 环境响应性 

分 类 号：O631[理学—高分子化学] TB324[理学—化学]