ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): A. Narender, G. Sathaia

Email(s): arrollanarender@gmail.com

DOI: Not Available

Address: A. Narender* and G. Sathaia
Department of Physics, Kakatiaya University, Warangal- A.P. -506009
Corresponding author

Published In:   Volume - 5,      Issue - 2,     Year - 2012


ABSTRACT:
A systematic measurement of dielectric constant (e) and dielectric loss (tand) on powder pressed pellets of VP-EMA copolymer in composition 50/50 have been carried out in the frequency range 200Hz -100kHz and in the temperature range from room temperature to 180oC, covering through the glass transition Tg. Two sets of relaxation peaks on slight above room temperature and the other slightly above Tg are noticed from tand versus temperature curves for different frequencies. The peaks are attributed to ß and a- relaxations. Temperature coefficient of dielectric constant (TCe) is evaluated to understand the nature of the temperature dependence. AC conductivity is evaluated to understand the conduction process. Activation energy is calculated from loss (tand) versus temperature curves and log?p versus reciprocal temperature curves. Activation energy is also calculated from Arrehenius plots.


Cite this article:
A. Narender, G. Sathaia. Dielectric Relaxation Behaviour and AC Conductivity of Vinylpropionate and Ethylmethacrylate (VP-EMA) copolymers. Asian J. Research Chem. 5(2): February 2012; Page 187-190.

Cite(Electronic):
A. Narender, G. Sathaia. Dielectric Relaxation Behaviour and AC Conductivity of Vinylpropionate and Ethylmethacrylate (VP-EMA) copolymers. Asian J. Research Chem. 5(2): February 2012; Page 187-190.   Available on: https://ajrconline.org/AbstractView.aspx?PID=2012-5-2-5


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