Radiation synthesis of polymer/clay nanocomposite hydrogels with high mechanical strength

作     者：马荣芳 袁劼 李灿灿 彭静 董珍 许零 李久强 翟茂林 

作者机构：Beijing National Laboratory for Molecular Sciences Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Sciencethe Key Laboratory of Polymer Chemistry and Physics of the Ministry of EducationCollege of Chemistry and Molecular Engineering Peking University School of Materials and Engineering University of Science and Technology Beijing Department of Energy and Resources Engineering College of Engineering Peking University 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2014年第25卷第6期

页      面：40-47页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(Nos.91126014 and 11079007) 

主　　题：聚合物/粘土纳米复合材料 复合水凝胶 辐射合成 机械强度 PNIPAAm 有机/无机 机械性能 光学透明性 

摘      要：Poor mechanical properties of PNIPAAm hydrogels have limited their applications. Nanocomposite hydrogels(NC gels) which incorporate inorganic clay possess high mechanical strength and other desirable *** this paper, we report a facile approach to synthesize NC gels using radiation technique. With exfoliated clay sheets acting as crosslinkers, N-isopropylacrylamide monomers are polymerized and crosslinked to form NC gels under γ-irradiation at room temperature. Apart from regular swelling behavior and interesting performance in thermo sensitivity, the radiation synthesized NC gel(RNC gel) has good optical transparency, high strength and flexibility. Through Micro-FTIR, XPS and TG analyses, a particular chemically crosslinked organic/inorganic network was identified in the RNC gel.