原位还原法制备rGO/PSt复合乳液  

Reduced graphene oxide/polystyrene nanocomposites synthesized via in situ reduction method

作　　者：程珍琪 刘悦[1] 段兰兰[1] 曾繁明 王治国[1] 张玉红[1] 何培新[1] 

机构地区：[1]有机化工新材料湖北省协同创新中心,有机功能分子合成与应用教育部重点实验室,湖北大学化学化工学院,湖北武汉430062

出　　处：《粘接》2017年第1期33-37,共5页Adhesion

摘　　要：采用原位还原法,通过强还原剂水合肼将氧化石墨烯/聚苯乙烯(GO/PSt)复合乳液中氧化石墨烯还原成还原氧化石墨烯片层,制备得到还原氧化石墨烯/聚苯乙烯复合乳液(rGO/PSt)。红外光谱(FT-IR)、X射线衍射仪(XRD)、拉曼光谱(Raman)表征结果表明rGO/PSt复合乳液的成功制备。透射电镜(TEM)、扫描电镜(SEM)表征其微观结构,微观条件下rGO吸附或包裹在PSt表面;通过热重(TG)和差示扫描量热仪(DSC)表征可知rGO/PSt复合物的热性能得到一定程度的改善。The Pickering emulsion polymerization method was used to synthesis the graphene oxide/polystyrene nanocomposite emulsion which acts as the basis to fabricate the reduced graphene oxide/polystyrene （rGO/PSt） composite emulsion through in situ reduction method with hydrazine hydrate as the reductant. The results of the FTIR, XRD, and Raman characterization showed that the rGO/PSt composite emulsion was synthetized successfully . The TEM and SEM characterization demonstrated that the rGO was absorbed at the surface of PSt or wraped PSt microspheres. Furthermore, rGO/PSt nanocomposite displayed improved thermal stability in comparison to pure PSt. The Tg decreasing phenomenon of rGO/PSt nanocomposites can be attributed to the introduction of GO which acted as the plasticizer in the composites. The TG and DSC results indicated that the thermal property ofrGO/PSt composite emulsion was improved to some extent.

关 键 词：还原氧化石墨烯 原位还原 复合乳液 

分 类 号：TQ331.4[化学工程—橡胶工业]