改性石墨烯/丙烯酸酯乳液的合成与性能研究  

Synthetic and performance of modified graphene/acrylic emulsion nanocomposites

作　　者：李全涛 徐君庭[1] 徐祖顺[3] 张发饶 LI Quan-tao;XU Jun-ting;XU Zu-shun;ZHANG Fa-rao(Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China;Materchem Technology Co.,Ltd.,Ningbo 315800,China;Faculty of Materials Science and Engineering,Hubei University,Wuhan 430062,China)

机构地区：[1]浙江大学高分子科学与工程学系,浙江杭州310027 [2]宁波能之光新材料科技股份有限公司,浙江宁波315800 [3]湖北大学材料科学与工程学院,湖北武汉430062

出　　处：《应用化工》2019年第3期501-505,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(51573039);浙江省博士后科研项目择优资助项目(20180046);宁波市北仑区科技创新团队资助(2016BL002)

摘　　要：采用种子乳液聚合法,以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸为单体,Tween80磺基琥珀酸二钠、OP-10和脂肪醇聚氧乙烯醚磺基琥珀酸单酯二钠为乳化剂,过硫酸铵、羟甲基丙烯酰胺为引发剂,先后合成出纯丙乳液、油酸-十二烷基硫酸钠改性氧化石墨烯/聚合物乳液和油酸-十二烷基硫酸钠改性石墨烯/聚合物乳液。聚合物乳液的结构和性能分析表明,油酸-十二烷基硫酸钠改性的氧化石墨烯或石墨烯成功地参与了乳液聚合中;改性氧化石墨烯/聚合物乳液或改性石墨烯/聚合物乳液的T_(d5%)和T_(d10%)差别不大,但均比对应的纯丙乳液的耐热性提高近50℃。The acrylic emulsion,the modified graphene oxide (GO)/acrylic emulsion nanocomposites and the modified graphene (GE)/acrylic emulsion nanocomposites were prepared by the method of pre-emulsification and semi-continuous seed emulsion polymerization,at different proportions of monomers,such as styrene (St),methyl methacrylate (MMA),butyl acrylate (BA) and acrylic acid (AA),with ammonium persulfate (APS) as initiators and N- methylol acrylamide as the cross-linking agent,respectively,supplemented with the compounded emulsifiers.The chemical structure and composition,the microstructure as well as the relevant thermoanalysis are characterized to confirm that the OA-SDS was successfully grafted onto the surface of GO or GE sheets.Furthermore,the corresponding thermal and chemical resistance properties of the acrylic nanocomposites filled with the OA-SDS-GO and OA-SDS-GE nanocomposites were studied and compared with those of neat acrylic emulsion.The TG results revealed that,compared with the neat styrene-acrylic emulsion,the OA-SDS-GO and OA-SDS-GE nanocomposites were more thermally stable,and the 5% and 10% thermal decomposition temperatures under N 2 atmosphere were increased at least 50 ℃.

关 键 词：石墨烯 纯丙乳液 种子乳液聚合 性能 

分 类 号：TQ628.9[化学工程—精细化工]