Crystallization morphology and crystallization kinetics of a liquid crystalline polyimide

T. S. Chung*, S. L. Liu, H. Oikawa, A. Yamaguchi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Crystallization morphology and crystallization kinetics of an aromatic thermotropic liquid crystalline polyimide, synthesized from 1,2,4,5-benzenetetra-carboxylic dianhydride (PMDA) and 1,3-bis[4-(4′-aminophenoxy) cumyl)] benzene (BACB), were studied by means of polarized light microscopy and differential scanning calorimetry. Isothermal crystallization experiments were performed at both isotropic temperatures and non-isotropic temperatures. Popoff and hedgehog types of negative spherulites with lamellar structure and needle-like positive crystals grown from the isotropic melt have been observed; Negative loose spherulites without lamellar structure were observed from the mesophase. The spherulites growth rates at different temperatures were measured. Isothermal crystallization kinetics for different transitions were studied by using Avrami equation.

Original languageEnglish (US)
Title of host publicationAnnual Technical Conference - ANTEC, Conference Proceedings
Editors Anon
PublisherSoc Plast Eng
Pages1494-1498
Number of pages5
Volume2
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3) - Atlanta, GA, USA
Duration: Apr 26 1998Apr 30 1998

Other

OtherProceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3)
CityAtlanta, GA, USA
Period04/26/9804/30/98

ASJC Scopus subject areas

  • Engineering(all)

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