Carbon fiber as an initiator of cationic polymerization of N-vinylcarbazole
Carbon fiber as an initiator of cationic polymerization of N-vinylcarbazole
复制标题
碳纤维作为N-乙烯基咔唑阳离子聚合引发剂
DOI：
10.1007/bf00255064
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发表时间：
1986
期刊：
影响因子：
3.2
通讯作者：
Y. Sone
中科院分区：
文献类型：
--
作者：
N. Tsubokawa;H. Maruyama;Y. Sone
摘要发现碳纤维能够在 60∼80°C 引发 N-乙烯基咔唑 (NVC) 的阳离子聚合。聚合反应的活化能估计为13.4 kcal/mol。通过用碳酸氢钾或重氮甲烷处理来封闭表面上的羧基，碳纤维失去聚合引发活性。因此，得出结论：碳纤维上的羧基在聚合引发中起重要作用。此外，还发现在聚合过程中，聚-NVC接枝到表面上；接枝率测定为39.7%（60℃，24小时）。
SummaryCarbon fibers were found capable of initiating the cationic polymerization of N-vinylcarbazole (NVC) at 60∼80°C. The activation energy of the polymerization was estimated to be 13.4 kcal/mol. The carbon fiber lost the initiating activity of the polymerization upon the blocking of carboxyl groups on the surface by the treatment with potassium bicarbonate or diazomethane. Therefore, it was concluded that carboxyl groups on carbon fiber play an important role in the initiation of the polymerization. Furthermore, it was found that during the polymerization, poly-NVC was grafted onto the surface; the grafting ratio was determined to be 39.7% (60°C, 24 h).