✦ LIBER ✦

Synthesis and properties of aromatic polyamides derived from 1,7-bis(4-aminophenoxy)naphthalene and various aromatic dicarboxylic acids

✍ Scribed by Chin-Ping Yang; Jiun-Hung Lin

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 557 KB
Volume: 34
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199602)34:3<341::aid-pola2>3.0.co;2-x

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✦ Synopsis

SYNOPSIS

A series of novel bis(phen0xy)naphthalene-containing polyamides having inherent viscosity up to 2.02 dL/g were synthesized by the direct polycondensation of the diamine 1,7bis(4-aminophenoxy)naphthalene with various aromatic dicarboxylic acids in N-methyl-8-pyrrolidone (NMP) using triphenyl phosphite and pyridine as condensing agents. Most of the polyamides could be readily dissolved in polar aprotic solvents such as N,N-dimethylacetamide and NMP, and could be solution-cast into transparent, flexible, and tough films. These polymers had glass transition temperatures in the range of 139-263OC, and 10% weight loss temperatures in nitrogen and air were above 499 and 484"C, respectively.

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