POLYMERIZATION OF PHENYLACETYLENE INITIATED BY TUNGSTEN CARBENE COMPLEX

被引：9
作者：
LIAW, DJ
LEU, SD
LIN, CL
LIN, CF
机构：
[1] Department of Chemical Engineering, National Taiwan Institute of Technology, Taipei
来源：
POLYMER JOURNAL | 1992年 / 24卷 / 09期
关键词：
PHENYLACETYLENE; TUNGSTEN CARBENE COMPLEX; APPARENT RATE CONSTANT; MECHANISM; THERMODYNAMIC PARAMETER;
D O I：
10.1295/polymj.24.889
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polymerization of phenylacetylene initiated by tungsten carbene complex 4 was investigated in various conditions. The rate of polymerization in polar solvents (such as CH2Cl2) were found to be slower than those in nonpolar solvents (such as n-hexane). The higher the polymerization temperature and the lower the initiator concentration, the higher molar mass was obtained. Kinetic orders, apparent rate constants and thermodynamic parameters were determined. Mechanism for initiation and propagation reactions are proposed based on the experimental results. IR and NMR spectra show predominant characteristic of trans structure in poly(phenylacetylene).
引用
收藏
页码：889 / 897
页数：9
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