甲基丙烯酸长链酯的等离子体引发聚合

摘要

The polymerization of n-alkyl methacrylate(n=8，12，14) was carried out by means of plasma-initiation. Many factors affecting the polymer conversion and molecular weight have been studied systematically. The polymerization features of the three n-alkyl methacrylates were compared， and the configuration of polymer has been elucidated by NMR. The results indicate that plasma-initiated polymerization not only complies with free-radical mechanism but also has the character of living-polymerization.%研究了甲基丙烯酸正辛酯、甲基丙烯酸正十二酯、甲基丙烯酸正十四酯的等离子体引发本体聚合。考察了各种操作参数对聚合转化率、相对分子质量的影响。并将三种长链酯的聚合情况进行对比，结果表明，随着链长的增加，等离子体引发聚合的活性降低。利用核磁共振测定了聚合物的微观结构，结果与常规自由基加热聚合产物相同。表明等离子体引发聚合是按自由基聚合机理进行的，并具有活性聚合的特征。