The thermal behavior of polyarylate/polyester (PHET) blend fibers is investigated by means of DSC thermal analysis. The results show that the crystallization behaviors of the two components in the PHET fibers, poly(4-hydroxybenzoic acid/6-hydroxyl-2-naphthonic acid) [P(HBA/HNA)] and poly(ethylene terephthalate) (PET), are independent of each other during annealing, in contrast to their crystal melting behaviors. The degree of three- dimensional order of P(HBA/HNA) is not as good as that of PET. and the structural regularity of P(HBA/HNA) has been improved to a certain extent in the PHET blend fibers.
Get full access to this article
View all access options for this article.
References
1.
Cheng, S.Z.D. , Kinetics of Mesophase Transitions in Thermotropic Copolyester. Macromolecules21, 2475 (1988 ).
2.
Li, F.M. , Zhou, H.X., and Sun, T., The Characterization of Transesterification of the Blend Consisting of Liquid Crystal Copolyester PHB/PET and PET, Acta Polym. Sin. (2), 189(1993).
3.
Troughton, M.J. , Davies, G.R., and Ward, I.M., Dynamic Mechanical Properties of Random Copolycsters of 4-Hydeoxybenzoic Acid and 2-Hydroxy-6-naphthoic Acid. Polymer30, 58 (1989).
4.
Xiao, C.F., and Takahashi, T., Structure of Liquid-Crystalline 2-Hydroxy-6-naphthoic Acid Copolyester Fiber , Sen'i Gakkaishi46, 49 (1990).
