Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/75270
Title: Crystallization morphology and crystallization kinetics of a liquid crystalline polyimide
Authors: Chung, T.S. 
Liu, S.L. 
Oikawa, H.
Yamaguchi, A.
Issue Date: 1998
Citation: Chung, T.S.,Liu, S.L.,Oikawa, H.,Yamaguchi, A. (1998). Crystallization morphology and crystallization kinetics of a liquid crystalline polyimide. Annual Technical Conference - ANTEC, Conference Proceedings 2 : 1494-1498. ScholarBank@NUS Repository.
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.
Source Title: Annual Technical Conference - ANTEC, Conference Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/75270
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