Journal
JOURNAL OF APPLIED SCIENCE AND ENGINEERING
Volume 12, Issue 2, Pages 123-128Publisher
TAMKANG UNIV
Keywords
Dielectric Relaxation; Time Domain Reflectometry; Alcohols
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A dielectric relaxation study on alcohols-ethyl methacrylate binary mixtures has been carried out at different concentrations and temperatures using Time Domain Reflectometry (TDR). The Least Squares fit method has been used to obtain the dielectric parameters (the static dielectric constant epsilon(0) and relaxation time tau). By using these parameters, the Bruggeman factor, the Kirkwood correlation factor and excess inverse relaxation time were determined and discussed to yield information on the molecular structure and dynamics of the mixture. The epsilon(0) and tau values decreased with an increase in the % of ethyl methacrylate in alcohols for all the systems. The value of the tau increased with an increase in chain-length of the alcohols whereas the reverse trend is observed for epsilon(0).
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