Dielectric Relaxation of Binary Mixtures of Alcohols with Ethyl Methacrylate

10.6180/jase.2009.12.2.03

K. Dharmalingam；K. Ramachandran；P. Sivagurunathan；B. Prabhakar Undre；P. W. Khirade；S. C. Mehrotra

Dielectric Relaxation ； Time Domain Reflectometry ； Alcohols

淡江理工學刊

12卷2期（2009 / 06 / 01）

123 - 128

英文

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 ε0 and relaxation time τ). 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 ε0 and τ values decreased with an increase in the % of ethyl methacrylate in alcohols for all the systems. The value of the τ increased with an increase in chain-length of the alcohols whereas the reverse trend is observed for ε0.