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：
- Funds：
- DOI：
  CLC： O631.2
- Published：20 March 1996
- Accepted：
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[1]李桂芝,施良和,叶美玲.EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE[J].Chinese Journal of Polymer Science,1996,{4}(01):41-47.

LI Guizhi, SHI Lianghe, YE Meiling. EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE[J]. 1996, 14(1): 41-47.
[1]李桂芝,施良和,叶美玲.EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE[J].Chinese Journal of Polymer Science,1996,{4}(01):41-47. DOI：

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

摘要

正

The ladderlike structure of PPSQ synthesized by using four kinds of catalysts （MgF

LiF

KOH and DCC） at different polymerization conditions has been investigated by IRand NMR. In the system using MgF

as the main catalyst

the most important factorwhich affects the ladderlike structure of PPSQ is the composition of the dual catalysts

MgF

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

LiF

KOH and DCC） at different polymerization conditions has been investigated by IRand NMR. In the system using MgF

as the main catalyst

the most important factorwhich affects the ladderlike structure of PPSQ is the composition of the dual catalysts

MgF

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