| EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE |
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| 作者姓名： | 李桂芝 施良和 叶美玲 |
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| 作者单位： | Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080 |
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| 基金项目： | National Natural Science Foundation of China |
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| 摘 要： | 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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| 收稿时间： | 1994-09-11 |
EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE |
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| LI Guizhi,SHI Lianghe,YE Meiling.EFFECT OF POLYMERIZATION CONDITIONS ON THE LADDERLIKE STRUCTURE OF POLYPHENYLSILSESQUIOXANE[J].Chinese Journal of Polymer Science,1996,0(1):41-47. |
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| Authors: | LI Guizhi SHI Lianghe YE Meiling |
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| Institution: | Polymer Physics Laboratory; Institute of Chemistry; Academia Sinica; Beijing 100080 |
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| 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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| Keywords: | Polyphenylsilsesquioxane Structure Polymerization condition |
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