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Citation: DHARMALINGAM K., RAMACHANDRAN K., SIVAGURUNATHAN P., KALAMSE G. M.. Dielectric Relaxation Properties of Alcohols and Acrylic Esters[J]. Acta Physico-Chimica Sinica, ;2007, 23(01): 50-54. doi: 10.1016/S1872-1508(07)60004-7 shu

Dielectric Relaxation Properties of Alcohols and Acrylic Esters

1.
Department of Physics, Annamalai University, Annamalai Nagar-608002, Tamilnadu, India; Postgraduate Department of Physics, Science College, Nanded-431605, Maharashtra, India

Received Date: 6 July 2006
Available Online: 8 January 2007

Dielectric relaxation of alcohols (1-propanol, 1-butanol, sec-butanol, tert-butanol, 1-pentanol, 1-heptanol, 1-octanol, and 1-decanol) with acrylic esters (methyl methacrylate, ethyl methacrylate, and butyl methacrylate) at 9.84 GHz were studied in n-heptane at 298 K. The result showed that 1:1 complex was predominant in these systems. The relaxation time showed a linear dependence with alkyl chain length of both alcohols and acrylic esters, but the dielectric constant showed a reverse trend. A comparative study of the free energy of activation for the dielectric relaxation and viscous flow suggested that a greater interference by neighboring atom was observed in the process of viscous flow than in dielectric relaxation, as the latter involved rotational form of motion, whereas the viscous flow involved both rotational and translational forms of motion.
- Dielectric relaxation,
- Alcohols;Acrylic esters,
- Hydrogen bonding,
- Solvent effects
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