Abstract
The dielectric properties of poly(ethylene oxide) (PEO) were examined for 10 samples ranging in molecular weight, M, from 190 to 2×106. Two dielectric relaxations were observed. The one observed at high temperature and low frequency is called α process, and the other at low temperature and high frequency is called β one. The β process is due to the local motion of amorphous PEO segments, and has a loss maximum temperature, Tmax, and an apparent activation energy, Ea, independent of either M or degree of crystallinity, Xc. On the other hand, the α process, which is due to a large scale conformational rearrangement of amorphous PEO segments, is dependent on both M and Xc. The relaxation strength and Tmax vary with Xc, while the Ea and the relaxation width do not depend on Xc but exhibit an abrupt increase at M of about 104. These results may be due to change not only in Xc but also in the crystalline morphology with M.
Similar content being viewed by others
Article PDF
References
N. G. McCrum, B. E. Read, and G. Williams, “Anelastic and Dielectric Effects in Polymeric Solids,” John Wiley & Sons, Ltd., New York, 1967.
P. Hedvig, “Dielectric Spectroscopy of Polymers,” Adam Hilger Ltd., Bristol, 1977.
Y. Ishida, J. Polym. Sci., A-2, 7, 1835 (1969).
M. Takayanagi, “Proceedings of the Fourth International Congress on Rheology,” Vol. 1, E. H. Lee, Ed., Providence, Rhode Island, 1963, p 161.
J. P. Arlie, P. A. Spegt, and A. E. Skoulios, Makromol Chem., 99, 170 (1966).
J. P. Arlie, P. A. Spegt, and A. E. Skoulios, Makromol Chem., 104, 212 (1967).
B. Wunderlich, “Macromolecular Physics,” Vol. 1, Academic Press, Inc., New York, 1973, pp 199—200.
Y. Ishida, M. Matsuo, and M. Takayanagi, J. Polym. Sci., B, 3, 321 (1965).
N. Koizumi and T. Hanai, J. Phys. Chem., 60, 1496 (1956).
T. M. Connor, B. E. Read, and G. Williams, J. Appl. Chem., 14, 74 (1964).
K. Arisawa, K. Tsuge, and Y. Wada, Jpn. J. Appl. Phys., 4, 138 (1965).
C. H. Porter and R. H. Boyd, Macromolecules, 4, 589 (1971).
F. N. Hill, F. E. Bailey, Jr., and J. T. Fits, Ind. Eng. Chem., 50, 5 (1958).
C. Sadron and P. Rempp, J. Polym. Sci., 29, 127 (1958).
F. E. Bailey, Jr., J. L. Kucera, and L. G. Imhof, J. Polym. Sci., 32, 517 (1958).
K. Adachi, Y. Hirose, and Y. Ishida, J. Polym. Sci., Polym. Phys. Ed., 13, 737 (1975).
S. Osaki, S. Uemura, and Y. Ishida, J. Polym. Sci., A-2, 9, 585 (1971).
K. S. Cole and R. H. Cole, J. Chem. Phys., 9, 314 (1941).
H. Froelich, “Theory of Dielectrics,” Oxford Univ. Press, London, 1958.
P. J. Flory, “Statistical Mechanics of Chain Molecules,” John Wiley, New York, 1969, pp 165—172.
T. Uchida, Y. Kurita, N. Koizumi, and M. Kubo, J. Polym. Sci., 21, 313 (1956).
J. Marchal and H. Benoit, J. Polym. Sci., 23, 223 (1957).
A. Kotera, K. Suzuki, K. Matsumura, T. Nakano, T. Oyama, and U. Kambayashi, Bull. Chem. Soc. Jpn., 35, 797 (1962).
J. Bak, G. Elefante, and J. E. Mark, J. Phys. Chem., 71, 4007 (1967).
Y. Wada, “Kobunshi no Kotaibussei,” Baifukan, Tokyo, 1971.
M. L. Williams, R. F. Landel, and J. D. Ferry, J. Am. Chem. Soc., 77, 3101 (1955).
J. D. Ferry, “Viscoelastic Properties of Polymers,” 3rd ed, John Wiley, New York, 1980, Chapter 11.
T. Suzuki and T. Kotaka, Macromolecules, 13, 1495 (1980).
H. Tadokoro, Y. Chatani, Y. Yoshihara, S. Tahara, and S. Murahashi, Makromol. Chem., 23, 109 (1964).
See, for example, B. Wunderlich, Macromolecular Physics, Vol. 1, Academic Press, New York, 1973, pp 206—208.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Se, K., Adachi, K. & Kotaka, T. Dielectric Relaxations in Poly(ethylene oxide): Dependence on Molecular Weight. Polym J 13, 1009–1017 (1981). https://doi.org/10.1295/polymj.13.1009
Issue Date:
DOI: https://doi.org/10.1295/polymj.13.1009