Citation: 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, 9(2): 113-119. shu

STUDY ON THE MECHANISM OF 1-OCTENE ZIEGLER-NATTA POLYMERIZATION BASED ON THE NUMBER OF ACTIVE CENTERS

FAN Zhiqiang ^{*，封麟先，杨士林} ,
FENG Linxian ,
YANG Shilin

Received Date: 10 March 1990

The number of active centers (Cp)-t and k_p-t profiles of Solvay type TiCl3 - AlR3 (R=C2H5, i-C4H9) or Stauffer AA TiCl3-Al (C2H5)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 kp decreases when C_p increases, indicating the presence of two or more types of different active centers. The Cpp-t plots of the Solvay TiCl3-AlR3 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 Cp in the induction periods are also discussed.
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