EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE

LI Guizhi; SHI Lianghe; YE Meiling

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EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE

Papers | Updated：2021-06-21

- EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE
- Vol. 14, Issue 1, Pages: 41-47(1996)
- Affiliations：
  
  1.   Polymer Physics Laboratory
  2.   Institute of Chemistry
  3.   Academia Sinica
  4.   Beijing 100080
- Author bio：
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LI Guizhi, SHI Lianghe, YE Meiling. EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE. [J]. 14(1):41-47(1996)
DOI：

LI Guizhi, SHI Lianghe, YE Meiling. EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE. [J]. 14(1):41-47(1996) DOI：

摘要

<,正,>, The ladderlike structure of PPSQ synthesized by using four kinds of catalysts （MgF,2,LiF, KOH and DCC） at different polymerization conditions has been investigated by IRand NMR. In the system using MgF,2, as the main catalyst, the most important factorwhich affects the ladderlike structure of PPSQ is the composition of the dual catalysts,MgF,2, and DCC. PPSQ prepared by using KOH as the catalyst has the highest regularityof ladderlike structure among all samples. PPSQ with different degree of ladder regularitycan be obtained by choice of polymerization conditions.

Abstract

The ladderlike structure of PPSQ synthesized by using four kinds of catalysts （MgF,2,LiF, KOH and DCC） at different polymerization conditions has been investigated by IRand NMR. In the system using MgF,2, as the main catalyst, the most important factorwhich affects the ladderlike structure of PPSQ is the composition of the dual catalysts,MgF,2, and DCC. PPSQ prepared by using KOH as the catalyst has the highest regularityof ladderlike structure among all samples. PPSQ with different degree of ladder regularitycan be obtained by choice of polymerization conditions.

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