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Synthesis and Physical Properties of Hyperbranched Aromatic Polyamide  

Ok Chang-Yul (Department of Chemical Environmental Engineering Soongsil University)
Kim Jang-Yup (Department of Chemical Environmental Engineering Soongsil University)
Huh Wansoo (Department of Chemical Environmental Engineering Soongsil University)
Lee Sang-Won (Department of Chemical Environmental Engineering Soongsil University)
Publication Information
Polymer(Korea) / v.29, no.6, 2005 , pp. 571-574 More about this Journal
Abstract
The aromatic hyperbranched polyamide was synthesized from 5-aminoisophthalic acid by direct polycondensation with triphenylphosphite (TPP) catalyst as a condensing agent. The modification of end-groups in the resulting hyperbranched polymer (HBP) with various alkyl alcohols were conducted. The modification of end-groups of HBP by alkyl groups resulted in an improved solubility in the THF comparing to that of the carboxylic acid-terminated aromatic HBP, Also, 10 wt$\%$ weight loss temperature decreased by increasing the length of alkyl group.
Keywords
hyperbranched polyamide; 5-aminoisophthalic acid; thermal property; solubility;
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