THE(CH3)3SiOSO2CF3/SbCl3 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3 PENTADIENE

DENG Jianguo; PENG Yuxing

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THE(CH3)3SiOSO2CF3/SbCl3 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3 PENTADIENE

Research Article | 更新时间：2021-03-19

- THE(CH3)3SiOSO2CF3/SbCl3 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3 PENTADIENE
- Acta Polymerica Sinica Issue 1, Pages: 1-6(1999)
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- Published：20 February 1999，
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DENG Jianguo, PENG Yuxing. THE(CH3)3SiOSO2CF3/SbCl3 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3 PENTADIENE. [J]. Acta Polymerica Sinica (1):1-6(1999)
DOI：

DENG Jianguo, PENG Yuxing. THE(CH3)3SiOSO2CF3/SbCl3 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3 PENTADIENE. [J]. Acta Polymerica Sinica (1):1-6(1999) DOI：

摘要

研究了三氟甲基磺酸三甲基硅酯／三氯化锑（（ＣＨ３）３ＳｉＯＳＯ２ＣＦ３／ＳｂＣｌ３）复合引发体系对１

３戊二烯的聚合行为．在（ＣＨ３）３ＳｉＯＳＯ２ＣＦ３引发剂中加入ＳｂＣｌ３后

使聚合反应速率提高了２４倍

产率从（ＣＨ３）３ＳｉＯＳＯ２ＣＦ３引发的５５％提高到８０％以上

分子量提高１７倍．在聚合体系中加入酮类后

产率和分子量相对于（ＣＨ３）３ＳｉＯＳＯ２ＣＦ３／ＳｂＣｌ３配比为０２：１时引发所得聚合物均呈下降趋势；但对不同的酮来说

随着酮的位阻的增大

聚合物的产率和分子量均增大．聚合物的１ＨＮＭＲ图和红外谱图数据均证明该聚合反应是通过（ＣＨ３）３ＳｉＯＳＯ２ＣＦ３与体系中残存的水水解所形成的质子酸ＨＯＳＯ２ＣＦ３与ＳｂＣｌ３反应所形成的复合体系引发进行的．

Abstract

Cationic polymerization of 1

3 pentadiene (PD) by trimethylsilyl trifluoromethanesulfonate ((CH3)3SiOSO2CF3) in combination with SbCl3 were carried out in n hexance at 30℃. Addition of SbCl3 into the (CH3)3SiOSO2CF3 induced PD polymerization. The polymer yield increases from 55% to 80%

the polymerization is accelerated 24 times and the molecular weight of polymer is 17 times. Various ketones were used to mediate the initiating system (CH3)3SiOSO2CF3/SbCl3

the more bulky the ketone is

the higher yield and molecular weight are obtained.The 1H-NMR and the IR show that the polymerization of PD was initiated by the SbCl3 in complexation with trific acid (HOTf) resulting from hydrolysis of (CH3)3 SiOSO2CF3 adventitious water.

关键词

三氟甲基磺酸三甲基硅酯１３-戊二烯阳离子聚合

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