Abstract
The induction time to in nucleation of poly(1,4-butylene terephthalate) (PBT) was measured and its effect on solidification time ts of melted PBT was studied. When two samples of PBT-A and PBT-B composed of different molecular weight were mixed together to prepare sample PBT-C and then melted, the induction time became longer in comparison with individual samples. The thermodynamic consideration was applied for the clarification of such behaviour. As the result of consideration, it was found that the enthalpy change at melting ΔHm of sample PBT-C became higher than individual samples and the flowability of sample PBT-C became four times higher in comparison with both samples.
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W. F. H. Borman and M. Kramer, Am. Chem. Soc. Org. Coat. Plast. Chem., Paper, 34, 77 (1974).
M. Gilbert and F. J. Hybart, Polymer, 13 327 (1972).
C. F. Pratt and S. Y. Hobbs, Polymer, 17, 12 (1976).
W. F. H. Borman, J. Appl. Polym. Sci., 22, 2119 (1978).
Y. Harano, Kagaku Kogaku, 40, 476 (1976).
R. S. Stein and A. Mirsa, J. Polym. Sci., Polym. Phys. Eds., 18, 327 (1987).
C. A. Boye, Jr. and J. R. Overton, Bull. Am. Phys. Soc., 19, 352 (1974).
S. Y. Hobbs and C. F. Pratt, J. Appl. Polym. Sci., 19, 1701 (1975).
G. W. Preckshet and G. G. Brown, Ind. Eng. Chem., 44, 1314 (1952).
I. Gutzow, V. Dochev, E. Pancheva, and K. Dimov, J. Polym. Sci., Polym. Phys. Ed., 16, 1155 (1978).
F. P. Price, in “Nucleation,” A. C. Zettlemoyer, Ed., Marcel Dekker, New York, N.Y., 1969, Chapter 8.
K. Uki, Ed., “Houwa-poriesuteru-jushi Handbook,” Vol. 1, Nikkankogyo, Tokyo, 1989, p 326.
K. Tashiro, Y. Nakai, M. Kobayashi, and H. Tadokoro, Macromolecules, 13, 137 (1980).
M. Yokouchi, Y. Sakakibara, Y. Chatani, H. Tadokoro, T. Tanaka, and K. Yoda, Macromolecules, 9, 266 (1976).
M. Imoto, “Koubunshi-seiseino-Kagaku,” 4th ed, Asakura Shoten, Tokyo, 1958, p 197.
P. J. Flory, J. Am. Chem. Soc., 64, 2205 (1942).
P. J. Flory, J. Chem. Phys., 12, 425 (1944).
P. J. Flory, “Principles of Polymer Chemistry,” Cornell University Press, Ithaca, N.Y., 1953, p 70.
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Onishi, Y., Nakai, T. Effect of Nucleation of Poly(1,4-butylene terephthalate) on Its Flowability. Polym J 24, 833–840 (1992). https://doi.org/10.1295/polymj.24.833
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DOI: https://doi.org/10.1295/polymj.24.833