Abstract
Electrical properties of PVC, PMMA and their 1: 1 polyblends, before and after adding paranitroaniline into them, have been investigated as a function of temperature, electric field and dopant concentration, to study the mechanism of electrical conduction. The current was measured by applying d.c. voltage in the range 25–800 V at various thermostatically controlled temperatures (313–373 K). The results obtained predict the Schottky-Richardson conduction mechanism to be operative and d.c. conductivity of the blend lies intermediate between those of individual components. Further, the conductivity of the blend increases with temperature and applied electric field and also with the increase in concentration of dopant. To identify the mechanism governing the conduction, the activation energies in low temperature (LTR) and high temperature (HTR) regions have been calculated. The dielectric constant of the sample at various temperatures have been calculated which increased with increase in temperature. This is indicative of the diffusion of ions in space charge polarization at higher temperature. The study of XRD and FTIR supports the changes occurring in the conductivity of the blend.
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References
Bahadur P and Sastry N V 2003 Principles of polymer science (New Delhi: Narosa Publishing House) p. 281
Bahri R and Seth R K 1997 Indian J. Pure & Appl. Phys. 35 104
Belsare N G and Deogaonkar V S 1998a Indian J. Pure & Appl. Phys. 36 280
Belsare N G and Deogaonkar V S 1998b Indian J. Pure & Appl. Phys. 15 157
Blythe A R 1979 Electrical properties of polymers (Cambridge: Cambridge University Press) 95 p. 105
Francise A Carey 2003 Organic chemistry (New Delhi: Tata McGraw Hill Publishing Co.) 5th ed., p. 922
Goosey Martin T 1985 Plastics and their properties for electronic and electrical applications (Amsterdam: Elsevier) pp 12–13
Khare P K, Gaur M S and Srivastava A P 1994 Indian J. Pure & Appl. Phys. 32 14
Purohit G and Joshi G C 2001 Indian J. Phys. B75 571
Rajendran S and Uma T 2000 Mater. Letts 44 242
Seanor Donald A 1982 Electrical properties of polymers (New York: Academic Press) pp 7–9, 15–27
Skotheim Terje A 1986 Handbook of conducting polymers (New York: Marcel Dekker Inc) 2 p. 917
Smith William F 1990 Principles of materials science and engineering (New York: McGraw Hill Publishing Company) 2nd ed, pp 331–333
Tager A 1972 Physical chemistry of polymers (Moscow: MIR Publication) p. 282
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Waghmare, R.V., Belsare, N.G., Raghuwanshi, F.C. et al. Study of d.c. electrical conductivity of paranitroaniline doped (1:1) polyvinylchloride and poly(methyl methacrylate) polyblends. Bull Mater Sci 30, 167–172 (2007). https://doi.org/10.1007/s12034-007-0030-9
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DOI: https://doi.org/10.1007/s12034-007-0030-9