氧化石墨烯/聚乙烯醇复合材料的制备及其阻隔性能  

Preparation and Barrier Property of Graphene Oxide/Polyvinyl Alcohol Composites

作　　者：刘红宇[1] 王红光[2] 刘继纯[1] 张景会[1] 牛青山[1] 

机构地区：[1]河南科技大学化工与制药学院,河南洛阳471023 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《河南科技大学学报（自然科学版）》2017年第2期95-98,104,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(21101058);河南科技大学博士科研基金项目(13480051)

摘　　要：以层状石墨为原料制备了氧化石墨烯(GO),将其引入到聚乙烯醇(PVA)基体中,得到GO/PVA复合材料。借助X射线衍射分析和差示扫描量热分析表征了复合材料的结晶性能,使用气体渗透测试仪分析了复合材料的氢气阻隔性能。分析结果表明:当GO质量分数低于0.5%时,片层结构的GO导致PVA的结晶度增加;当GO质量分数大于0.5%时,PVA的结晶度降低。复合材料的氢气阻隔性能受到GO添加量和PVA结晶度的协同影响。Graphene oxide( GO) was prepared by flake graphite. Then,GO was introduced into polyvinyl alcohol matrix to fabricate GO / PVA composites. By means of X-ray diffraction analysis and differential scanning calorimetry analysis,the crystallization behaviors of the composites were investigated. Hydrogen gas barrier property of the composites was also determined by using a gas permeability tester. The results indicate that GO mass fraction plays an important role in the crystallization behavior of PVA. When the GO mass fraction is lower than 0. 5%,the layered GO leads to a increase in the crystallinity of PVA. However,When the GO mass fraction is higher than 0. 5%,the crystallinity of PVA is decreased. The hydrogen gas barrier property of composites is influenced by the synergistic effects of GO mass fraction and crystallinity of PVA.

关 键 词：阻隔性能 氧化石墨烯 聚乙烯醇 复合材料 

分 类 号：TQ32[化学工程—合成树脂塑料工业]