caa a22 4500 445327480 CHVBK 20180317142725.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10953-010-9633-7 doi (NATIONALLICENCE)springer-10.1007/s10953-010-9633-7 Characterization of Dominant Hydrogen Bonded Complex Structures of Dielectric Polarization and Viscous Flow Processes in Glycerol-Formamide Binary Mixtures [Elektronische Daten] [R. Sengwa, Shobhna Choudhary, Vinita Khatri] The static permittivity and viscosity of glycerol-formamide (Gly-FA) binary mixtures were measured at eleven concentrations over the entire composition range and at temperatures T=288.15, 303.15, 318.15 and 333.15K. The excess static permittivity and excess viscosity of the mixtures were determined using the mole-fraction additive mixture law. Results indicated that the molecular dielectric polarization in Gly-FA mixtures is governed by 1:1 complexes with a decrease in number of H-bonded parallel aligned dipolar ordering at all of the investigated temperatures. The 2Gly:FA complexes facilitate the viscous flow process and the number of these complexes decreases with increasing temperature. The apparent activation energy of viscous flow, determined from Arrhenius plots, increases with increases of the Gly concentration in the mixtures. The electric-field-induced increment of the Helmholtz free energy and the entropy of these binary mixtures were determined from the temperature dependence of the static permittivity and its derivative, respectively. Springer Science+Business Media, LLC, 2010 Static permittivity nationallicence Viscosity nationallicence Molecular interactions nationallicence Thermodynamical parameters nationallicence Glycerol nationallicence Formamide nationallicence Sengwa R. Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut Choudhary Shobhna Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut Khatri Vinita Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/1(2011-01-01), 154-163 0095-9782 40:1<154 2011 40 10953 https://doi.org/10.1007/s10953-010-9633-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10953-010-9633-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sengwa R. Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut NATIONALLICENCE 700 1- Choudhary Shobhna Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut NATIONALLICENCE 700 1- Khatri Vinita Dielectric Research Laboratory, Department of Physics, J.N.V. University, 342 005, Jodhpur, India aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/1(2011-01-01), 154-163 0095-9782 40:1<154 2011 40 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer