Abstract
A new thermotropic liquid crystalline (TLC) copolyesteramide with a phenylhydroquinone derivative was synthesized by a solution polymerization. The annealing effect of the copolyesteramide was investigated by using differential scanning calorimetry, polarized optical microscopy, and X-ray diffraction. The TLC copolyesteramide turned out to have a low melting temperature and a wide nematic range above the melting temperature. Because it had bulky side groups from the main chain, the formation of a three-dimensional order was hindered but it could only be achieved by a long time annealing. The fast crystallization was not observed but mainly the slow process was involved in the crystallization. The Avrami parameter (n) of the copolyesteramide has very low values because of the slow crystallization.
Similar content being viewed by others
Article PDF
References
S.Z.D. Cheng, Macromolecules, 21, 2475 (1988).
P. Driscoll, K. Fujiwara, T. Masuda, A. Furukawa, and R. W. Lenz, Polym. J., 20, 351 (1988).
S. Z. D. Cheng, R. L. Johnson, A. Zhang, and Z. Zhou, Macromolecules, 22, 4240 (1989).
P. Driscoll, K. Fujiwara, T. Masuda, A. Furukawa, and R. W. Lenz, and S. Bhattacharya, Polym. J., 22, 609 (1990).
S. R. Rojstaczer and R. S. Stein, Macromolecules, 23, 4863 (1990).
M. H. B. Skovby, C. A. Heilmann, and J. Kops, Am. Chem. Soc., Symp. Ser., 435, 46 (1990).
J. del Pino, C. M. Rocha, M. A. Gomez, and J. G. Fatou, Makromol. Chem., 193, 2251 (1992).
V. N. Tsvetkov, S. V. Bushin, and L. N. Andreeva, Eur. Polym. J., 28, 955 (1992).
H. R. Kricheldorf and F. Ruhser, Polymer, 33, 2431 (1992).
V. Tsukruk, Polymer, 33, 2605 (1992).
D. Sek, A. Wolinska, and H. Janeczek, J. Polym. Mater., 3, 225 (1986).
S. M. Aharoni, Macromolecules, 21, 1941 (1988).
T. Uryu, J. C. Song, and J. Kato, Polym. J., 21, 409 (1989).
W. Volksen, J. R. Lyerla, Jr., J. Economy, and B. Dawson, J. Polym. Sci., Polym. Chem. Ed., 21, 2249 (1983).
M.-Y. Cao and B. Wunderlich, J. Polym. Sci., Polym. Phys. Ed., 23, 521 (1985).
G. D. Butzbach, J. H. Wendorff, and H. J. Zimmermann, Polymer, 27, 1337 (1986).
M. R. Kamal, O. Khennache, and S. K. Goyal, Polym. Eng. Sci., 29, 1089 (1989).
L. Mandelkern, “Crystallization of Polymers,” McGraw-Hill, New York, 1964.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, Y., Chung, I. Annealing Effects on Phase Transition of a Thermotropic Liquid Crystalline Copolyesteramide. Polym J 25, 1257–1265 (1993). https://doi.org/10.1295/polymj.25.1257
Issue Date:
DOI: https://doi.org/10.1295/polymj.25.1257