首页 | 本学科首页   官方微博 | 高级检索  
     

STUDY ON THE MECHANISM OF 1-OCTENE ZIEGLER-NATTA POLYMERIZATION BASED ON THE NUMBER OF ACTIVE CENTERS
引用本文:范志强,封麟先,杨士林. STUDY ON THE MECHANISM OF 1-OCTENE ZIEGLER-NATTA POLYMERIZATION BASED ON THE NUMBER OF ACTIVE CENTERS[J]. 高分子科学, 1991, 0(2): 113-119
作者姓名:范志强  封麟先  杨士林
作者单位:Department of Chemistry,Zhejiang University,Hangzhou,Department of Chemistry,Zhejiang University,Hangzhou,Department of Chemistry,Zhejiang University,Hangzhou
摘    要:The number of active centers (C_p)-t and k_p-t profiles of Solvay type TiCl_3 - AlR_3 (R=C_2H_5, i-C_4H_9) or Stauffer AA TiCl_3-Al (C_2H_5)_3 catalyzed 1-octene polymerization were determined by using an acetyl chloride quenching method as well as kinetic data. The results show that in the studied systems k_p decreases when C_p increases, indicating the presence of two or more types of different active centers. The C_(p~(-t)) plots of the Solvay TiCl_3-AlR_3 systems show the presence of both stable active centers and unstable centers which decay in the polymerization process. The phenomena are explained based on a model of active center plurality. The increases of C_p in the induction periods are also discussed.

收稿时间:1990-03-10

STUDY ON THE MECHANISM OF 1-OCTENE ZIEGLER-NATTA POLYMERIZATION BASED ON THE NUMBER OF ACTIVE CENTERS
FAN Zhiqiang,FENG Linxian,YANG Shilin. STUDY ON THE MECHANISM OF 1-OCTENE ZIEGLER-NATTA POLYMERIZATION BASED ON THE NUMBER OF ACTIVE CENTERS[J]. Chinese Journal of Polymer Science, 1991, 0(2): 113-119
Authors:FAN Zhiqiang  FENG Linxian  YANG Shilin
Affiliation:Department of Chemistry; Zhejiang University; Hangzhou
Abstract:The number of active centers (C_p)-t and k_p-t profiles of Solvay type TiCl_3 - AlR_3 (R=C_2H_5, i-C_4H_9) or Stauffer AA TiCl_3-Al (C_2H_5)_3 catalyzed 1-octene polymerization were determined by using an acetyl chloride quenching method as well as kinetic data. The results show that in the studied systems k_p decreases when C_p increases, indicating the presence of two or more types of different active centers. The C_(p~(-t)) plots of the Solvay TiCl_3-AlR_3 systems show the presence of both stable active centers and unstable centers which decay in the polymerization process. The phenomena are explained based on a model of active center plurality. The increases of C_p in the induction periods are also discussed.
Keywords:1-octene   Ziegler-Natta polymerization   Mechanism   Active center
本文献已被 CNKI 等数据库收录!
点击此处可从《高分子科学》浏览原始摘要信息
点击此处可从《高分子科学》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号