Thermosetting mechanism study of poly[(phenylsilylene)ethynylene-1,3-phenyleneethynylene] by solid-state NMR spectroscopy and computational chemistry

被引：85

作者：

Kuroki, S

Okita, K

Kakigano, T

Ishikawa, J

Itoh, M

机构：

[1] Japan High Polymer Ctr, Adv Polymer Lab, Tsukuba, Ibaraki 3050047, Japan

[2] Mitsui Chem Inc, Performance Mat R&D Ctr, Sakae Ku, Yokohama, Kanagawa 2470006, Japan

来源：

MACROMOLECULES | 1998年 / 31卷 / 09期

关键词：

D O I：

10.1021/ma971133g

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly[(phenylsilylene)ethynylene-1,3-phenyleneethynylene] (abbreviated MSP) which contains Si-H and C=C bonds, produces a very highly thermally stable polymer by curing above 150 degrees C. In this study, we determined the thermosetting mechanism of MSP using C-13 and Si-29 solid-state NMR methods and computational chemistry. From these results, we concluded that the intermolecular cross-linking reactions due to (1) the Diels-Alder reaction between Ph-C=C and C=C and (2) the hydrosilylation reaction between Si-H and C=C proceed above 150 degrees C, and a very highly thermally stable structure is formed. Only the hydrosilylation reaction occurs above 300 degrees C.

引用

页码：2804 / 2808

页数：5

共 30 条

[1] SYNTHESIS OF NATURAL LIGNAN ARYLNAPHTHALENE LACTONES, DAURINOL AND RETROCHINENSIN [J].