Dielectric Properties of Polyester Reinforced with Carbon Black Particles

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Dielectric constant and ac conductivity of Polyester doped with carbon black are investigated in the frequency range (0.5-103) KHz and within the temperature range (26-80) oC. Dielectric permittivity and loss tangent reduced with increasing frequency and increase with increasing temperature. The ac conductivity σac for all samples were found to be weak frequency dependent at low frequency, however vary with frequency as a power law ωs at higher frequency range. The variation of frequency exponential factor s between 0.63 and 0.77, indicates a dominant hopping process at low temperatures. From the temperature dependence of dc conductivity, the increase of activation energy was observed with carbon black concentrations.

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170-176

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October 2011

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[1] R.J. Sengwa, and S. Sankhla, Characterization of ionic conduction and electrode polarization relaxation processes in ethylene glycol oligomers, Polymer Bulletin 60, 689-700 (2008).

DOI: 10.1007/s00289-008-0892-z

Google Scholar

[2] T. Kimura, and M. Kajiwara, Electrical properties of poly(n-butylamino) (di-allylamino) phosphazene, Journal of Material Science, 33(11), 2955-2959 (1998).

Google Scholar

[3] S. Shekhar, V. Prasad, and S.V. Subramanyam, Structural and electrical properties of composites of polymer-iron carbide nanoparticles embedded in carbon, Materials Science and Engineering B 133, 108-112 (2006).

DOI: 10.1016/j.mseb.2006.06.010

Google Scholar

[4] F. Carmona, and J. Ravier, Electrical properties and mesostructure of carbon black-filled polymers, Carbon 40, 151-156 (2002).

DOI: 10.1016/s0008-6223(01)00166-x

Google Scholar

[5] Woo Seok Chin, and Dai Gil Lee, Dielectric Characteristics of E-glass-Polyester Composite Containing Conductive Carbon Black Powder, Journal of Composite Materials 41, 403-417 (2007).

DOI: 10.1177/0021998306063792

Google Scholar

[6] D.K. Das-Gupta, Polyethylene: structure, morphology, molecular motion and dielectric behavior, IEEE Electrical Insulation Magazine 10(3), 5-15 (1994).

DOI: 10.1109/57.285418

Google Scholar

[7] F.U.Z. Chowdhury, and A.H. Bhuiyan, Dielectric properties of plasma-polymerized diphenyl thin films, Thin Solid Films 370, 78-84 (2000).

DOI: 10.1016/s0040-6090(00)00751-3

Google Scholar

[8] Ayman S. Ayesh, Electrical and optical characterization of PMMA doped with Y0. 0025Si0. 025Ba0. 9725(Ti(0. 9)Sn0. 1)O3 ceramic, Chinese Journal of Polymer Science 28(4), 537-546 (2010).

DOI: 10.1007/s10118-010-9086-x

Google Scholar

[9] Jeppe C. Dyre and Thomas B. Schrøder, Universality of ac conduction in disordered solids, Reviews of Modern Physics 72 (3), 873- 892 (2000).

DOI: 10.1103/revmodphys.72.873

Google Scholar

[10] J. Bisquert and G. Garcia-Belmonte, Interpretation of AC Conductivity of Lightly Doped Conducting Polymers in Terms of Hopping Conduction, Russian Journal of Electrochemistry, 40(3), 352–358 (2004).

DOI: 10.1023/b:ruel.0000019676.99599.bc

Google Scholar

[11] S.P. Mondal, R. Aluguri, and S.K. Ray, Dielectric and transport properties of carbon nanotube-CdS nanostructures embedded in polyvinyl alcohol matrix, Journal of Applied Physics 105, 114317 (2009).

DOI: 10.1063/1.3142296

Google Scholar

[12] M.H. Harun, E. Saion, A. Kassim, M.Y. Hussain, I.S. Mustafa and M.A.A. Omer, Temperature dependence of ac electrical conductivity of PVA-PPy-FeCl3 composite polymer films, Malaysian Polymer Journal l3 (2), 24-31 (2008).

Google Scholar

[13] V. Raja, A.K. Sharma, and V.V.R. Narasimha Rao, Impedance spectroscopic and dielectric analysis of PMMA-CO-P4VPNO polymer films, Materials Letters 58, 3242-3247 (2004).

DOI: 10.1016/j.matlet.2004.05.061

Google Scholar

[14] F.U.Z. Chowdhury, and A.H. Bhuiyan, Dielectric properties of plasma-polymerized diphenyl thin films, Thin Solid Films 370, 78-84 (2000).

DOI: 10.1016/s0040-6090(00)00751-3

Google Scholar

[15] M. Akram, A. Javed, and T.Z. Rizvi, Dielectric properties of industrial polymer composite materials, Turk J. Physs. 29, 355-362 (2005).

Google Scholar

[16] S. Darwish, Capacitance measurements and ac conductivity of Nickel Phthalocyanine films, International Journal of Pure and Applied Physics 1(2), 165-172 (2005).

Google Scholar

[17] Jeppe C. Dyer, The random free-energy barrier model foe ac conduction in disordered solids, J. Appl. Phys. 64 (5), 2456-2468 (1988).

DOI: 10.1063/1.341681

Google Scholar

[18] G.E. Pike, ac Conductivity of scandium oxide and a new hopping model for conductivity, Physical Review B 6 (4), 1572-1580 (1972).

DOI: 10.1103/physrevb.6.1572

Google Scholar

[19] F.M. Reicha, M. Ishra, and M.M. Gabr, On the physical and electrical properties of poly propenal prepared by electropolymerization technique, J. of Phys. and Chem. of Sol. 64, 1157-1161 (2003).

DOI: 10.1016/s0022-3697(03)00044-1

Google Scholar