Dielectric relaxation and FTIR studies on molecular interaction between ethylene glycol monobutyl ether with methanol at 303K

摘要

Complex dielectric spectra over the frequency range of 10 MHz to 20 GHz and FTIR spectra in the region of 4000 cm~(-1) 500 cm~(-1) of binary mixture of ethylene glycol monobutyl ether with methanol were obtained over entire concentration range at 303K. The static dielectric constant (ε_0) and relaxation time (τ) have been obtained. Using these values the excess permittivity (ε~E), excess inverse relaxation time (1/τ)~E, and Kirkwood correlation factor (g~(eff)) were determined. On the basis of these parameters, intermolecular interaction and dynamics of molecules are predicated and conformational of the hydrogen bond is supported by the FTIR.