Summary
Electrical-impedance measurements have been made in the frequency range 5 Hz to10 MHz in pure poly(ethylene oxide) having a molecular weight of 600 000 from 254 K nearly up to the melting point of the crystalline phase (about 330 K). As the temperature approaches the melting point there are large increases in the realε′ and imaginaryε″ parts of the dielectric constant. The frequency dependence ofε′ is characterized by a primary-relaxation process, whose frequency increases with increasing temperature as a consequence of decrease of the average structural relaxation time. There is strong evidence that this low-frequency dispersion rises mainly from the diffusive transport of localised charge carriers rather than a purely orientation relaxation process. In addition the effects of hydrostatic pressure (0–25 Gpa) on the frequency dependences of the realε′ and imaginaryε″ parts of the dielectric constant have been measured in the same temperature range.
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References
T. M. Connor, B. E. Read andG. Williams:J. Appl. Chem.,14, 74 (1964).
Y. Ishida, M. Matsuo andM. Takayanagi:Polym. Lett.,3, 321 (1965).
K. Arisawa, K. Tsuge andY. Wada:Jpn. J. Appl. Phys,4, 138 (1965).
C. H. Porter andR. H. Boyd:Macromolecules,4, 589 (1971).
J. J. Fontanella, M. C. Wintersgill, J. P. Calame andC. G. Andeen:Solid State Ionics,8, 333 (1983).
M. C. Wintersgill, J. J. Fontanella, P. J. Welcher andC. G. Andeen:J. Appl. Phys.,58, 2875 (1985).
J. J. Fontanella, M. C. Wintersgill, P. J. Welcher, J. P. Calame andC. G. Andeen:IEEE Trans. Electr. Insul.,20, 943 (1985).
C. A. Vincent:Prog. Solid State Chem.,17, 145 (1987).
P. G. Bruce andC. A. Vincent:J. Chem. Soc. Faraday Trans.,89, 3187 (1993).
J. J. Fontanella, M. C. Wintersgill, J. P. Calame, F. P. Pursel andD. R. Figueroa:Solid State Ionics,9–10, 1139 (1983).
A. V. Chadwick, J. H. Strange andM. R. Worboys:Solid State Ionics,9–10, 1155 (1983).
A. R. Blythe:Electrical Properties of Polymers (Cambridge University Press, Cambridge, 1979).
N. E. Hill, W. E. Vaughan, A. H. Price andM. Davies:Dielectric Properties and Molecular Behaviour (Van Nostrand Reinhold Company, London, 1969).
R. H. Boyd: inMethods of Experimental Physics, edited byR. A. Fava,16C, 379 (1980).
F. E. Bailey andJ. V. Koleske:Poly(ethylene oxide) (Academic Press, New York, San Francisco, London, 1976).
A. K. Jonscher:Dielectric Relaxation in Solids (Chelsea Dielectrics Press, London, 1983).
S. Saito, H. Sasabe, T. Nakajima andK. Yada:J. Polym. Sci. A-2,6, 1297 (1968).
A. Bartolotta, G. Carini, G. Di Marco, C. Romeo andG. Salvato:J. Appl. Phys.,69, 704 (1991).
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Fanggao, C., Saunders, G.A., Lambson, E.F. et al. Frequency dependence of the complex dielectric constant of poly(ethylene oxide) under hydrostatic pressure. Il Nuovo Cimento D 16, 855–864 (1994). https://doi.org/10.1007/BF02456735
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DOI: https://doi.org/10.1007/BF02456735