Abstract
Measurements of the dielectric absorption of solutions, poly(vinyl acetate)–toluene and poly(vinyl chloride)–dioxane systems were carried out. Based on the effects of temperature, frequency, and concentration of the polymer in the dielectric absorption, the mechanism of this absorption is discussed. The frequency at which the maximum loss occurs depends largely upon the concentration of the polymer. This dependence is described successfully in terms of the free volume model. The activation enthalpy and entropy of this dielectric relaxation process were obtained as functions of the volume fraction of the polymer. These values increase with the volume fraction of the polymer and approach those for the α-relaxation process observed in pure polymers. The variation of free energy with volume fraction in this process can be explained by the change of free volume. Observed relaxation times show apparent molecular weight dependence and this effect can also be explained in terms of the free volume variation.
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References
P. E. Rouse, Jr., J. Chem. Phys., 21, 1272 (1953).
F. Bueche, J. Chem. Phys., 22, 603 (1954).
B. H. Zimm, J. Chem. Phys., 24, 269 (1956).
R. N. Work and S. Fujita, J. Chem. Phys., 45, 3779 (1966).
M. E. Baur and W.H. Stockmayer, J. Chem. Phys., 43, 4319 (1965).
P. Lue, C. P. Smyth, and A. V. Tobolsky, Macromolecules, 2, 446 (1969).
A. Dobry, J. Polym. Sci., 2, 623 (1947).
Y. Ishida, M. Matsuo, and K. Yamafuji, Kolloid Z., 180, 108 (1962).
S. Saito, Kolloid Z., 189, 116 (1963).
W. H. Stockmayer, Pure Appl. Chem., 15, 539 (1967).
N. G. McCrum, B. E. Read, and G. Williams, “Anelastic and Dielectric Effects in Polymeric Solid”, Wiley, London, 1967, p 426.
W. Sommer, Kolloid Z., 167, 97 (1959).
M. Davies, G. Williams, and G. D. Loveluck, Z. Elektrochem., 64, 575 (1960).
J. H. Vreeland, Ph.. D. Thesis, Massachusetts Institute of Technology, 1957.
A. K. Doolittle, J. Appl. Phys., 22, 1471 (1951).
A. K. Doolittle, J. Appl. Phys., 23, 236 (1952).
S. Glasstone, K.J. Leidler, and H. Eyring, “The Theory of Rate Process, New York, N.Y., and London, 1941, p 547.
F. Bueche, J. Chem. Phys., 30, 748 (1959).
S. Oka and O. Nakada, “Kotaiyudentairon," Iwanami Shoten Co., Tokyo, 1960, p 118 (in Japanese).
L. De Brouckère, D. Buess, and L. K. H. Van Beek, J. Polym. Sci., 23, 211 (1957).
T. G. Fox, Jr. and P. J. Flory, J. Appl. Phys., 21, 581 (1950).
H. Fröhlich, “Theory of Dielectrics”, The Clarendon Press, Oxford, 1949, p 93.
K. Higashi, K. Bergmann, and C. P. Smyth, J. Phys. Chem., 64, 880 (1960).
R. H. Cole and K. S. Cole, J. Chem. Phys., 9, 341 (1941).
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Nojiri, A., Okamoto, S. Dielectric Properties of Polymer–Solvent Systems. Polym J 2, 689–697 (1971). https://doi.org/10.1295/polymj.2.689
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DOI: https://doi.org/10.1295/polymj.2.689