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Heat treatment studies of a TLCP fiber

✍ Scribed by Juha Sarlin; Pertti TörmäLä

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
559 KB
Volume
50
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

This work deals with the heat treatment of fibers and nonoriented specimens made of the thermotropic liquid crystalline polymer Vectra A900 in the light of tensile properties and DSC measurements. In calorimetric measurements, there seem to be some differences in the effects of the treatment between macroscopically isotropic (nonoriented) and highly oriented fiber specimens. Nonisothermal treatments also produce some effects on the tensile properties, which may be attributable to the thermal history of samples. Under the conditions of this study, a multistep treatment, ending at a final stage where the temperature was higher than the original melting point of the polymer, did not cause any acceleration in the rate at which tensile properties increase. © 1993 John Wiley & Sons, Inc.

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