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HomeMaterials Science ForumMaterials Science Forum Vol. 992High-Performance Liquid Crystalline Polyesters:...

High-Performance Liquid Crystalline Polyesters: Influence of the Synthetic Pathway on the Thermal Properties

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Abstract:

Liquid crystalline (LC) copolyesters derived from 4-hydroxybenzoic acid, terephthalic acid, and bisphenol A were synthesized under a variety of reaction conditions. Carboxylic groups in the raw materials were involved in either direct polycondensation or transesterification reactions. Protecting the carboxylic groups via methyl ester or phenyl ester formation was found to increase the yield and the molecular weight of the samples. It turned out that the maximal value of the degree of polymerization and, consequently, the highest heat resistance was observed for the samples prepared using phenyl esters of carboxylic acids.

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Periodical:

Materials Science Forum (Volume 992)

Pages:

386-391

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.992.386

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Online since:

May 2020

Authors:

T.R. Deberdeev*, Liana K. Karimova, Alsu I. Akhmetshina

Keywords:

High-Performance Polymers, Liquid Crystalline Polymers, Polycondensation, Thermal Stability

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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