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Effect of Acid Acceptor on Synthesis of New Copolyamide with Piperazine Moiety

机译:酸受体对哌嗪部分合成新共聚酰胺的影响。

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摘要

Effect of acid acceptor (AA) on the low temperature solution polymerizaiton of te copolyamide 4I-PIP(20) from isopthaloyl chloride, 4,4'-diaminodiphenylsulfone, and piperazine (their diamine component ratio is 80-20) was studied. The type and amount of AA had a large effect on not only the polymerization condition and polymerization degree fo 4I-PIP(20), but also on its microstructrue. Pyridine was the most favorable AA, since it gave a homogeneity to the polymerization solution of 4I-PIP(20), and that it was most suitable for the synthesis of 4I-PIP(20) with high polymerization degree. The H-NMR measurement made it clear that 4I-PIP(20) prepared with pyridine was random copolyamide.
机译:研究了酸受体(AA)对异卤酰氯,4,4'-二氨基二苯砜和哌嗪(二胺组分比为80-20)的共聚酰胺4I-PIP(20)低温溶液聚合的影响。 AA的种类和数量不仅对聚合条件和4I-PIP(20)的聚合度有很大影响,而且对其微结构也有很大的影响。吡啶是最有利的AA,因为它使4I-PIP(20)的聚合溶液均匀,并且最适合于聚合度高的4I-PIP(20)的合成。 H-NMR测量清楚地表明,用吡啶制备的4I-PIP(20)是无规共聚酰胺。

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