Abstract
Differential scanning calorimetric and dynamic mechanical analyses were carried out to investigate the melting behavior and miscibility of blends of vinylidene fluoride-tetrafluoroethylene and vinylidene fluoride-hexafluoroacetone copolymers, both polymers being crystalline. Blends showed a different melting behavior with the annealing temperature; single or double melting peaks were observed on annealing over an entire blend composition. They were ascribed to the cocrystallization or separate crystallization of blends, respectively. On the other hand, annealing of quenched samples affected the glass transition behavior of blends; single or double glass transition temperatures were observed depending on the annealing condition in the dynamic mechanical measurements. It was well explained with the miscibility of amorphous phases of blends at annealing temperature. Consequently it was found that the cocrystallization in the blends could be occurred in the miscible amorphous phases. Particularly this blend system showed the upper critical solution temperature (UCST) behavior in both the crystalline and amorphous phases; it was almost rare phenomenon that the polymer blends showed UCST behavior.
Similar content being viewed by others
Article PDF
References
D. R. Paul and S. Newman, Ed., “Polymer Blends,” Vols. I and II, Academic Press, London, 1978.
L. A. Utracki, “Polymer Alloys and Blends,” Hanser Publishers, New York, 1990.
M. M. Coleman, J. F. Graf, and P. C. Painter, “Specific Interactions and the Miscibility of Polymer Blends,” Technomic Publishing Company, Lancaster, P. A., U.S.A., 1991.
T. Nishi, J. Macromol. Sci-Phys., B17(3), 517 (1980).
T. Nishi and T. T. Wang, Macromolecules, 8, 909 (1975).
R. E. Bernstein, C. A. Cruz, D. R. Paul, and J. W. Barlow, Macromolecules, 10, 681 (1977).
G. Natta, G. Allegra, I. W. Bassi, D. Sianesi, G. Capporiccio, and E. Torti, J. Polym. Sci., A, 3, 4263 (1965).
H. W. Starkweather, Jr., J. Appl. Polym. Sci., 25, 139 (1980).
H. Tanaka and A. J. Lovinger, Macromolecules, 20, 2638 (1987).
R. G. Alamo, R. H. Glaser, and L. Mandelkern, J. Polym. Sci., B, Polym. Phys., 26, 2169 (1988).
A. Siegman, G. Cohen, and Z. Baraam, J. Appl. Polym. Sci., 37, 1481 (1989).
G. Gurra, F. E. Karasz, and W. J. MacKnight, Macromolecules, 19, 1935 (1986).
J. E. Harris and L. M. Robeson, J. Polym. Sci., B, Polym. Phys., 25, 311 (1987).
J. B. Lando and W. W. Doll, J. Macromol. Sci.-Phys., B2, 205 (1968).
G. Moggi, P. Bonardelli, and J. J. Bart, J. Polym. Sci., Polym. Phys. Ed., 22, 357 (1984).
V. L. Maksimov, L. I. Tarutina, N. A. Dreiman, Ts. S. Dunyevskaya, and L. N. Pirozhnaya, Vysokomol. Soyedin., Ser. A, 17, 1585 (1975).
T. Furukawa and E. Fukuda, J. Polym. Sci., Polym. Phys., 16, 92 (1978).
J. H. Magil and H. M. Li, Polymer, 19, 416 (1978).
R. H. Glaser and L. Mandelkern, J. Polym. Sci., Polym. Phys. Ed., 26, 221 (1988).
T. Ougizawa, T. Inoue, and H. W. Kammer, Macromolecules, 18, 2089 (1985).
G. Cong, Y. Haung, W. J. MacKnight, and F. E. Karasz, Macromolecules, 19, 2765 (1986).
A. J. Lovinger, Macromolecules, 16, 1529 (1983).
B. Wunderlich, “Macromolecular Physics,” Vol. 1, Academic Press, New York, 1973.
S. Tasaka and S. Miyata, J. Appl. Phys., 57, 906 (1985).
B. Hahn, J. Wendorf, and D. Y. Yoon, Macromolecules, 18, 718 (1985).
P. J. Flory, D. Y. Yoon, and K. A. Dill, Macromolecules, 17, 862 (1984).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cho, J., Tasaka, S. & Miyata, S. Cocrystallization and Miscibility in Blends of Vinylidene Fluoride-Tetrafluoroethylene and Vinylidene Fluoride-Hexafluoroacetone Copolymers. Polym J 25, 1267–1274 (1993). https://doi.org/10.1295/polymj.25.1267
Issue Date:
DOI: https://doi.org/10.1295/polymj.25.1267