丙烯酸丁酯原位接枝PVC的合成与性能研究.pdfVIP

第 36 卷第 8 期 塑料工业 2008 年 8 月 CHINA PLASTICS INDUSTRY ·11 · 丙烯酸丁酯原位接枝 PVC 的合成与性能研究　 贺瑞玲 , 王庆海 (华东理工大学材料科学与工程学院 , 上海 200237) ( ) ( ) ( ) 　　摘要 : 采用溶胀聚合的方法在聚氯乙烯 PVC 颗粒内部原位接枝丙烯酸丁酯 BA , 考察了反应配比 m BA / m (PVC) 对接枝反应的影响 , 并研究了接枝产物的相容性和形态结构。结果表明 , 在 m (BA) / m ( PVC) 达到平衡溶胀度 ( ) ( ) ( ) ( ) 15 时 , 接枝率和凝胶含量达到最大。m BA / m PVC = 15/ 85 时的产物相容性比m BA / m PVC = 50/ 50 的产物好 , 颗粒形态规整 ; 共聚产物 PVCBA 具有接枝交联结构。 　　关键词 : 原位接枝 ; 溶胀度 ; 接枝率 ; 相容性 ; 颗粒形态 　　中图分类号: TQ3253 　　　文献标识码 : A 　　　文章编号 : 1005 - 5770 (2008) 08 - 0011 - 03 Study on Synthesis and Performance of PVC Insitu grafted by BA HE Ruiling , WANG Qinghai ( ) College of Material Sci. and Eng. , East China University of Sci. and Eng. , Shanghai 200237 , China 　　Abstract : BA was insitu grafted by means of swelling onto PVC particles. The effect of blending ratio of BA/ PVC on the grafting reaction was investigated , and the miscibility and the morphology of the graft product were studied. The results showed both the grafting ratio and gel percent had maxmiums at the balanceable swelling de gree of 15. DSC and SEM results showed the miscibility between the two phases was better and particles structure morphology got more regular at 15/ 85 of BA/ PVC co