Microstructure of Polypropylene Prepared with Kaminsky Catalyst System

Kaminsky 촉매계로 제조한 폴리프로필렌의 미세구조

  • Lee, Cheal-Gyu (Department of Environmental Engineering, Chongju University)
  • 이철규 (청주대학교 이공대학 환경공학과)
  • Received : 1996.02.14
  • Published : 1996.06.25

Abstract

Kaminsky catalyst system($Et(Ind)_2ZrCl_2$ and MAO(methylaluminoxane)) was prepared. Propylene was polymerized at $60^{\circ}C$ in this system. The microstructure was studied by using the $^{13}C$ NMR spectrometer. From the $^{13}C$ NMR data, the 2, 1-insertion of propylene was controlled stereospecific by Kaminsky catalyst due to the structures of meso and racemo I. After the 2, 1-insertion of propylene, 1, 2-insertion of the chain end was less stereospecifically controlled by the catalyst.

Acknowledgement

Supported by : 청주대학교