Hyperbranched polycarbosilane macromonomers bearing oxazoline functionalities

被引：73

作者：

Lach, C

Muller, P

Frey, H

Mulhaupt, R

机构：

[1] UNIV FREIBURG,FREIBURGER MAT FORSCHUNGSZENTRUM,D-79104 FREIBURG,GERMANY

[2] UNIV FREIBURG,FREIBURGER MAT FORSCHUNGSZENTRUM,D-79104 FREIBURG,GERMANY

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 03期

关键词：

D O I：

10.1002/marc.1997.030180306

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Synthesis of hyperbranched polycarbosilanes by hydrosilylation of triallylsilane is reported. Soluble high molecular weight polymer was obtained in an uncontrolled bulk reaction. Addition of 2-(10-decen-1-yl)-1,3-oxazoline (i) afforded control over degree of polymerization (DP) and (ii) resulted in hyperbranched macromonomers. 17000 greater than or equal to<(M)over bar (w)>greater than or equal to 800 (GPC (PS)) was obtained. Si-29 NMR spectroscopy allowed identification of dendritic, branched, linear, and terminal silicon branch-points. A modified definition for the degree of branching yielded a value of 0.48 +/- 0.05 (theory: 0.44).

引用

页码：253 / 260

页数：8

共 35 条

[1] A VERSATILE SYNTHESIS OF ISOMERIC HYPERBRANCHED POLYETHERKETONES [J].