| 2-巯基苯并噻唑为引发剂的氮氧稳定自由基聚合 |
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| 引用本文： | 张玉,徐文健,周年琛.2-巯基苯并噻唑为引发剂的氮氧稳定自由基聚合[J].苏州大学学报(医学版),2004,20(4):64-66,94. |
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| 作者姓名： | 张玉 徐文健 周年琛 |
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| 作者单位： | 苏州大学化学化工学院 江苏苏州215006
(张玉，徐文健)，苏州大学化学化工学院 江苏苏州215006(周年琛) |
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| 基金项目： | 国家自然科学基金资助项目(20176033) |
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| 摘 要： | 采用2-巯基苯并噻唑(2-Mercaptobenzothiazole)(MBT)为引发剂，在2，2，6，6-四甲基哌啶氮氧自由基(TEMPO)存在下，研究了苯乙烯的氮氧稳定自由基聚合．考察了TEMPO与MBT的浓度比值对聚合反应的影响，发现随着比值的增大，聚合速率明显下降，分子量也有所降低，当比值大于1时，分子量分布可以保持在1．30以下．另外，成功的扩链实验和对聚合物的^1H NMR分析也证实了聚合是按照稳定自由基聚合机理进行的．
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| 关 键 词： | 稳定自由基 TEMPO 氮氧自由基 引发剂 聚合速率 聚合机理 NMR 2-巯基苯并噻唑 哌啶 甲基 |
| 文章编号： | 1000-2073(2004)04-0064-03 |
Nitroxide-mediated radical polymerization of styrene initiated by 2-mercaptobenzothiazole |
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| ZHANG Yu,XU Wen-jian,ZHOU Nian-chen.Nitroxide-mediated radical polymerization of styrene initiated by 2-mercaptobenzothiazole[J].Journal of Suzhou University(Natural Science),2004,20(4):64-66,94. |
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| Authors: | ZHANG Yu XU Wen-jian ZHOU Nian-chen |
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| Abstract: | 2-mercaptobenzothiazole (MET) was used as initiator for the stable free radical polymerization of styrene in the presence of TEMPO. The effect of the ratio of TEMPO]0/MBT]0 on polymerization was studied, and the results showed that with the increasing of ratio the rate of polymerization decreased obviously. When the ratio was more than 1, the molecular weight distribution may kept less than 1.3. In addition, the stable free radical polymerization process was confirmed by successful chain extension reaction and H NMR of polymer. |
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| Keywords: | :2-mercaptobenzothiazole styrene NMRP living polymerization |
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