VINYL POLYMERIZATION WITH TITANOCENESⅡ. ACRYLONITRILE POLYMERIZATION WITH TITANOCENE DICHLORIDE-DIMETHYL SULPOXIDE

YE Da-keng; LI Gui-hua; Liu Dao-yu

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VINYL POLYMERIZATION WITH TITANOCENESⅡ. ACRYLONITRILE POLYMERIZATION WITH TITANOCENE DICHLORIDE-DIMETHYL SULPOXIDE

Research Article | 更新时间：2021-03-19

- VINYL POLYMERIZATION WITH TITANOCENESⅡ. ACRYLONITRILE POLYMERIZATION WITH TITANOCENE DICHLORIDE-DIMETHYL SULPOXIDE
- Acta Polymerica Sinica Issue 2, Pages: 139-144(1984)
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- Published：20 April 1984，
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YE Da-keng, LI Gui-hua, Liu Dao-yu. VINYL POLYMERIZATION WITH TITANOCENESⅡ. ACRYLONITRILE POLYMERIZATION WITH TITANOCENE DICHLORIDE-DIMETHYL SULPOXIDE. [J]. Acta Polymerica Sinica (2):139-144(1984)
DOI：

YE Da-keng, LI Gui-hua, Liu Dao-yu. VINYL POLYMERIZATION WITH TITANOCENESⅡ. ACRYLONITRILE POLYMERIZATION WITH TITANOCENE DICHLORIDE-DIMETHYL SULPOXIDE. [J]. Acta Polymerica Sinica (2):139-144(1984) DOI：

摘要

本文研究了在光照射下Cp2TiCl2-DMSO双组分体系对丙烯腈的催化聚合反应。DMSO能显著地提高Cp2TiCl2催化丙烯腈聚合速度

并随光强变化而变化;停止光照时

聚合反应随之终止。聚合速度随温度升高而提高

与[Cp2TiCl2]/2成正比。当加进DPPH时

出现相应的诱导期。这些都表明聚合反应为游离基过程。计算了速度Ri和Rp

速度常数ki和k总及聚合总活化能E总。

Abstract

Bulk polymerization of acrylonitrile in the presence of Cp2TiCl2.DMSO under the irradiation of light had been investigated. The DMSO efficiently promoted the catalytic process. The rate of polymerization increased with the increase of intensity of light. Polymerization was terminated when the light was taken off. Based on the facts that the rate proportional to [Cp2TiCl2]1/2

increased with the increase of temperature and there were induction periods in the presence of DPPH

a free radical mechanism was proposed

The rate R

the rate constants k and the activation energy E had also been calculated.

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