微米级无溶剂型PVAc/PSF核壳乳液的制备  

Preparation of micron-sized non-solvent PVAc/PSF core-shell emulsion

作　　者：陈玉坤[1] 苏涛[2] 贾德民[1] 陈克复[3] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广西大学化学化工学院,广西南宁530004 [3]华南理工大学资源科学与造纸工程学院,广东广州510640

出　　处：《粘接》2008年第2期1-4,共4页Adhesion

基　　金：中国博士后科学基金资助项目(20060400759);华南理工大学博士后创新科学基金项目。

摘　　要：将废聚苯乙烯泡沫塑料(PSF)溶于醋酸乙烯酯(VAc)中,通过乳液聚合,制备了聚醋酸乙烯酯(PVAc)/废聚苯乙烯(PSF)乳液。整个过程没有2次污染。讨论了PSF溶解方式、反应时间对反应的影响。结果表明,PSF的溶解方式对VAc的转化率和产品的性能基本上没有影响,反应时间的延长可以提高乳液的黏度。分析了核壳结构产物的生成机理,扫描电子显微镜(SEM)分析表明,产物为纺锤状核壳乳液。Waste polystyrene foam plastic（PSF） was dissolved in vinyl acetate and the PVAc/PSF emulsion was prepared through emulsion polymerization. The whole process doesn＇t cause any secondary pollutants. The influence of dissolution process and react time on reaction was discussed, the experimental results showed that dissolution process has no effect on fractional conversion of vinyl acetate and properties of the product, the extension of react time can increase the viscosity of the emulsion. The forming mechanism of core-shell structured product was discussed. The structure of PVAc/PSF emulsion was characterized by scanning electron microscopy （SEM） , SEM observations suggested that the product is spndle-like core-shell particle emulsion.

关 键 词：醋酸乙烯酯 废聚苯乙烯泡沫塑料(PSF) 核壳结构 聚乙烯醇 乳液聚合 

分 类 号：TQ325[化学工程—合成树脂塑料工业]