功能化石墨烯/聚乙烯醇复合材料的制备及性能研究

Preparation and performance study of functionalized graphene/poly(ving akohol)composite

采用1-萘磺酸钠非共价修饰石墨烯,得到功能化石墨烯。接着,通过溶液共混法制备出功能化石墨烯/聚乙烯醇复合材料。利用XRD、SEM、TGA、DSC和拉伸测试对复合材料的结构、形貌、热学与力学性能进行分析。结果表明:当功能化石墨烯的添加量为0.5%(wt,质量分数)时,功能化石墨烯与聚乙烯醇之间有良好的相容性,复合材料的拉伸强度和玻璃化转变温度分别提高了25.9%和7.0℃。

Graphene was non-covalently modified with 1-naphthalene sulfonic acid sodium to acquire funetionalized graphene. Then, functionalized graphene/poly（vinyl alcohol） composite was prepared via solution blend process. The struc- ture, morphology, and thermal and mechanical properties of composite were analyzed by XRD, SEM, TGA, DSC and tensile test. The result showed that when the addition amount of functionalized graphene was 0.5 wt%, functionalized graphene had preferable compatibility with poly（vinyl alcohol）. The tensile strength and glass-transition temperature of composite in creased 25.9% and 7.0℃ ,respectively.