中国塑料 ›› 2010, Vol. 24 ›› Issue (10): 50-54 .DOI: 10.19491/j.issn.1001-9278.2010.10.010

• 材料与性能 • 上一篇    下一篇

水悬浮体系中苯乙烯和马来酸酐接枝聚丙烯改性研究

祝宝东 王鉴 董群 宋军   

  1. 东北石油大学化学化工学院
  • 收稿日期:2010-06-29 修回日期:1900-01-01 出版日期:2010-10-26 发布日期:2010-10-26

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

ZHU Baodong WANG Jian DONG Qun SONG Jun   

  • Received:2010-06-29 Revised:1900-01-01 Online:2010-10-26 Published:2010-10-26
  • Contact: ZHU Baodong

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St加入量的增加,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 %。随着接枝率的增加,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,亲水性改善。

关键词: 聚丙烯, 苯乙烯, 马来酸酐, 接枝, 水接触角

Abstract: 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 floe rate, water contact angle, X-ray diffraction, and Fourier transform infrared spectroscopy. It showed that the graft ratio of MAH increased with increasing ST dosage. When the weight ratio of St/MAH was 3/1, the graft ratio was 3.10 % and graft efficiency reached 70.02 % With increasing grafting ratio, the MFR value decreased, melt strength increased,crystallinity lowered, and hydrophilicity enhanced.

Key words: polypropylene, styrene, maleic anhydride, grafting, water contact angle

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