SI-29 NUCLEAR-MAGNETIC-RESONANCE STUDY OF THE STRUCTURE OF SILICON OXYCARBIDE GLASSES DERIVED FROM ORGANOSILICON PRECURSORS

被引：68

作者：

CORRIU, RJP ^{[1
]}

LECLERCQ, D ^{[1
]}

MUTIN, PH ^{[1
]}

VIOUX, A ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,CNRS,UMR 44,F-34095 MONTPELLIER 05,FRANCE

来源：

JOURNAL OF MATERIALS SCIENCE | 1995年 / 30卷 / 09期

关键词：

D O I：

10.1007/BF01184579

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several silicon oxycarbide glasses with O/Si ratios 1.2 and 1.8 were prepared by pyrolysis below 1000 degrees C of organosilicon precursors. Their structure was investigated using Si-29 magic-angle spinning nuclear magnetic resonance. The spectra obtained are consistent with a purely random distribution of Si-O and Si-C bonds, which depends on the O/Si ratio of the glass only, regardless of the structure of the precursors. This result is interpreted by the occurrence, during the pyrolysis of entropically controlled redistribution reactions involving the exchange of Si-O and Si-C bonds.

引用

页码：2313 / 2318

页数：6

共 24 条

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