层状聚乙烯醇/氧化石墨烯纳米复合膜的制备及性能研究  

Preparation and performance of poly(vinyl alcohol)/graphene oxide nanocomposite films with layered structure

作　　者：马国富[1] 李佳佳[1] 彭辉[1] 王辉[1] 雷自强[1] 

机构地区：[1]西北师范大学化学化工学院,生态环境相关高分子材料教育部重点实验室,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2013年第6期63-67,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(21164009)

摘　　要：采用改进的Hummers法制备了氧化石墨烯(GO),利用超声分散法和流延成膜法制备了具有层状结构的聚乙烯醇/氧化石墨烯(PVA/GO)纳米复合膜.采用红外光谱(FTIR)、透射电镜(TEM)、扫描电镜(SEM)和X射线衍射(XRD)对纳米复合膜的结构进行了表征,同时测试了复合膜的热性能、力学性能和耐水性能.结果表明,GO片层可以均匀地分散在PVA基体中,GO的加入不会影响PVA的结构,GO与PVA通过强烈相互作用,提高了复合膜的热稳定性、耐水性和力学性能.The graphene oxide is prepared by modified Hummers method , and the polyvinyl alcohol/graphene oxide（PVA/GO） nanocomposite films with a layered structure simply is prepared by ultrasonic dispersion and film-casting method . T he microstructures of the nanocomposite films are investigated using FTIR ,TEM ,SEM and XRD . The thermal stability ,mechanical properties and water-resistance of the nanocomposite films are also tested . The experimental results indicate that GO sheets are well dispersed in the PVA matrix , and crystalline structure of PVA is not affected by adding GO . Thermal stability , water-resistance and mechanical properties of the nanocomposite films are improved by strong interaction between PVA and GO .

关 键 词：氧化石墨烯(GO) 聚乙烯醇PVA 超声分散法 流延成膜法 层状结构 

分 类 号：TQ127.1[化学工程—无机化工]