水悬浮体系中苯乙烯和马来酸酐接枝聚丙烯改性研究  

Study on Styrene and Maleic Anhydride Grafted Polypropylene in Water Suspension System

作　　者：祝宝东[1] 王鉴[1] 董群[1] 宋军[1] 

机构地区：[1]东北石油大学化学化工学院,石油与天然气化工省重点实验室,黑龙江大庆163318

出　　处：《中国塑料》2010年第10期50-54,共5页China Plastics

基　　金：黑龙江省科技攻关项目(GZ06A402)

摘　　要：采用过氧化苯甲酰(BPO)为引发剂,通过水相悬浮法制备苯乙烯(St)和马来酸酐(MAH)双单体接枝聚丙烯(PP-g-St/MAH)。考察St加入量对接枝反应的影响,通过熔体流动速率和水接触角测试分析接枝产物的性能,采用X射线衍射和红外光谱分析表征接枝产物的结构。结果表明,随着St加入量的增大,MAH接枝率升高,在St/MAH为3/1时,MAH接枝率为3.10%,接枝效率高达70.02%。随着接枝率增加,接枝产物的熔体流动速率减小,PP主链间相互缠绕作用增强,熔体强度增大,结晶度降低,亲水性得到改善。Styrene and maleic anhydride grafted polypropylene （PP-g-St/MAH） was prepared via a water suspension grafting process. The effect of St dosage on the grafting reaction was investigated using melt flow rate, water contact angle, X-ray diffraction, and Fourier transform infrared spectroscopy. It showed that the grafting ratio of MAH increased with increasing St dosage. When the weight ratio of St/MAH was 3/1, the grafting ratio was 3. 10 % and grafting efficiency reached 70.02 %. With increasing grafting ratio, the melt flow rate decreased; melt strength increased; crystallinity lowered, and hydrophilicity enhanced.

关 键 词：聚丙烯 苯乙烯 马来酸酐 接枝 水接触角 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]