丙烯酸功能化纳米氧化石墨烯/丙烯酸酯复合乳液的制备及性能  

Preparation and characterization of acrylic acid functionalized nano graphene oxide/acrylate composite emulsion

作　　者：吴莉莉 艾书伦[1] 张玉红[1] 何培新[1] WU Lili;AI Shulun;ZHANG Yuhong;HE Peixin(Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials,Key Laboratory for the Synthesis and Application of Organic Functional Molecules,Ministry of Education,College of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China)

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

出　　处：《复合材料学报》2019年第1期192-199,共8页Acta Materiae Compositae Sinica

基　　金：湖北省高等学校优秀中青年科技创新团队计划(T201801)

摘　　要：以烯丙基磺酸钠(ALS)为可聚合乳化剂,采用种子乳液聚合法制备丙烯酸功能化纳米氧化石墨烯(FAGO)/丙烯酸酯复合乳液。通过红外光谱、XRD表征GO、FAGO的结构,通过SEM和TEM观察GO、FAGO、纳米FAGO/丙烯酸酯复合乳液的形貌。结果表明,丙烯酸上的羧基与GO羟基反应生成了酯键;FAGO的边缘发生扭曲变形,局部产生较多褶皱,体系的不规整度显著增加;纳米FAGO/丙烯酸酯乳胶粒子呈规则的球形。纳米粒径电位分析表明,纳米FAGO/丙烯酸酯复合乳液粒径大小均一,分散性良好,随着ALS加入量的增加,纳米FAGO/丙烯酸酯乳胶粒子的粒径逐渐减小,其分散性指数(PDI)先减小后增大,相应的Zeta电位逐渐升高,乳液的黏度逐渐增大,乳胶膜耐水性变差,当ALS用量为0.8wt%时,纳米FAGO/丙烯酸酯复合乳液综合性能最佳。Acrylic acid functionalized nano graphene oxide(FAGO)/acrylate composite emulsion was prepared by seed emulsion polymerization via using sodium allyl sulfonate(ALS)as polymerizable emulsifier.The structure of GO and FAGO were confirmed by FTIR and XRD,the morphology of GO,FAGO and nano FAGO/acrylate composite emulsions were observed by SEM and TEM.The results show that the carboxyl group on acrylic acid reacts with GO hydroxyl to form ester bond.The edge of FAGO is distorted and has more local folds,the system of irregularities increase significantly compared to GO.And the nano FAGO/acrylate composite latex particles are regularly spherical.The nano particle size potential analyzer test results show that the nano FAGO/acrylate composite emulsion size is uniform,well-disperse.With the increases of the amount of ALS,the particle size of the latex particles gradually decreases,its dispersion index(PDI)first decreases and then increases,the corresponding Zeta potential gradually increases,the viscosity of the emulsion gradually increases,and the water resistance of latex film becomes worse.When the amount of ALS is 0.8 wt%,the nano FAGO/acrylate composite emulsion obtains the best overall performance.

关 键 词：功能化氧化石墨烯 丙烯酸酯 复合乳液 乳液黏度 耐水性 

分 类 号：TQ316.334[化学工程—高聚物工业]