Abstract
The real part of the dielectric constant (ε′) of pure and doped polyvinyl alcohol (PVA) with 1, 2 and 3 wt% vanadate was measured as a function of temperature and frequency. (ε′) decreases with increasing frequency due to a rapid variation of the field accompanied with the applied frequency as well as the disordering of the segmental parts of the polymer chain. The vanadate effects appear in a form of increasing the crystallinity in the sample leading to a decrease in (ε′), except in the case of 2 wt% vanadate in which (ε′) is drastically increased. The d.c. conductivity for the vanadate doped PVA is measured as a function of temperature. The values of the activation energy as obtained from the experimental data give information about the presence of more than one conduction mechanism as well as the useful applications of PVA, especially in the field of electronics. © 1998 Kluwer Academic Publishers
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References
R. Bahri, J. Phys. D 15 (1992) 1036.
A. F. Basha, H. A. Abdel Samad and M. Amin, Egypt J. Phys. 16 (1985) 299.
A. K. Sharma, B. Rukmini and D. Santhi Sagar, Mater. Lett. 12 (1991) 59.
H. S. Nalwa, J. Mater. Sci. 27 (1992) 210.
N. V. Reddy and V. V. R. Narasimha Rao, J. Mater. Sci. Lett. 11 (1992) 1036.
A. K. Sharma, V. Adinarayana and D. Shanthi Sagar, Mater. Lett. 12 (1991) 247.
K. Stevea (Ed), “Order in the Amorphous State of Polymers”, (Plenum Pub., NY, 1987).
P. Braunlich, Top. Appl. Phys. 37 (1979).
D. Ronarch and P. Audren, J. Appl. Phys. 58 (1985) 474.
G. Banhegyi, G. Marosi, G. Bertalen and F. E. Karasz, Colloid Polym. Sci. 27 (1992) 113.
D. R. Garrel, P. Gaudreau and L. M. Zhang et al. J. Surg. Res. 51 (1991) 297.
K. Inoue, T. Fujisato and K. Eurezak et al., Pancreas 7 (1992) 562.
F. H. Abdel-Kader and S. A. Gaafar, J. Polym. Mater. 10 (1993) 245.
N. P. Peppas and E. W. Merrill, J. Biomed. Mater. Res. 11 (1977) 423.
S. A. Gaafar, F. H. Abdel-Kader and M. S. Rizk, Phys. Scr. 49 (1994) 366.
M. M. Perlman, J. Electrachem. Soc. 119 (1972) 892.
G. K. Narula, A. Tripathi and P. K. C. Pillai, J. Mater. Sci. 26 (1991) 4130.
D. A. Seanor, “Electrical Properties of Polymers”, (Academic Press, Inc. London Ltd., 1982).
A. C. Rastogi and K. L. Chopra, Thin Solid Films 27 (1975) 31.
A. K. Jonscher, ibid. 1 (1967) 1213.
K. C. Kao and W. Hwang, “Electrical Transport in Solids”, (Pergamon Press, Oxford, 1981).
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Ahmed, M.A., Abo-Ellil, M.S. Effect of dopant concentration on the electrical properties of polyvinyl alcohol (PVA). Journal of Materials Science: Materials in Electronics 9, 391–395 (1998). https://doi.org/10.1023/A:1008944411984
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DOI: https://doi.org/10.1023/A:1008944411984