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Thermotropic polyarylates derived from substituted hydroquinones and p-terphenyl-4,4″-dicarboxylic acid

✍ Scribed by T. Inoue; N. Tabata; T. Yamanaka

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
579 KB
Volume
30
Category
Article
ISSN
1381-5148

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✦ Synopsis

Polyarylates from substituted hydroquinones (HQs) and p-terphenyl-4,4'-dicarboxylic acid (TPDA) that were modified with 1,2-bis(phenoxy)ethane-4,4'-dicarboxylic acid (PEC), 1,2-bis(2-chlorophenoxy)ethane-4,4'-dicarboxylic acid (Cl-PEC), terephthalic acid (TA) and p-hydroxybenzoic acid (HBA) were prepared and their thermal and mechanical properties were investigated. These polyarylates exhibited liquid crystallinity at about the same temperatures as polyarylates derived from substituted HQs and 4,4'-diphenyldicarboxylic acid (BB). However, as-spun fibers and injection-molded specimens of these polyarylates exhibited lower moduli than those of substituted HQs and BB that were modified with PEC, Cl-PEC and TA.

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