EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*

LI Guizhi; YE Meiling; SHI Lianghe

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EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*

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- EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*
- EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*
- 高分子科学（英文版） 1994年12卷第4期页码：331-336
- Affiliations：
  
  1.   Polymer Physics Laboratory
  2.   Institute of Chemistry
  3.   Academia Sinica
  4.   Beijing 100080
- Author bio：
- Funds：
- DOI：
  中图分类号： TQ316.3
- 纸质出版：1994-12-20
- Accepted：
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[1]李桂芝,叶美玲,施良和.EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE[J].Chinese Journal of Polymer Science,1994,{4}(04):331-336.

LI Guizhi, YE Meiling, SHI Lianghe. EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*[J]. 1994, 12(4): 331-336.
[1]李桂芝,叶美玲,施良和.EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE[J].Chinese Journal of Polymer Science,1994,{4}(04):331-336. DOI：

LI Guizhi, YE Meiling, SHI Lianghe. EFFECT OF POLYMERIZATION CONDITIONS ON THE MOLECULAR WEIGHT OF POLYPHENYLSILSISQUIOXANE*[J]. 1994, 12(4): 331-336. DOI：

摘要

正

Samples of polyphenylsilsisquioxane （PPSQ）using CaF

or MgF

as the main catalysts hadbeen prepared under different polymerization conditions. The results were treated on anorthogonal design L

（3

）. All weight-average molecular weights （M

） of PPSQ had beenmeasured by gel permeation chromatography （GPC）. Effects of polymerization conditionsincluding reaction temperature

composition of the dual catalysts （CaF

or MgF

and DCC）

mixture of solvents and reaction time on M

of PPSQ have been discussed. The quantity of thecatalysts is the most important factor that affects M

of PPSQ. Reaction temperature is thesecond important factor. Appropriate polymerization condition has been established to get PPSQwith high M

Abstract

Samples of polyphenylsilsisquioxane （PPSQ）using CaF

or MgF

as the main catalysts hadbeen prepared under different polymerization conditions. The results were treated on anorthogonal design L

（3

）. All weight-average molecular weights （M

） of PPSQ had beenmeasured by gel permeation chromatography （GPC）. Effects of polymerization conditionsincluding reaction temperature

composition of the dual catalysts （CaF

or MgF

and DCC）

mixture of solvents and reaction time on M

of PPSQ have been discussed. The quantity of thecatalysts is the most important factor that affects M

of PPSQ. Reaction temperature is thesecond important factor. Appropriate polymerization condition has been established to get PPSQwith high M

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