Influence of molecules with chloro group on the associative liquid methanol: A dielectric relaxation approach

[摘要] The dielectric relaxation parameters, viz., static dielectric constant, 𝜖, and relaxation times, 𝜏, have been determined for chlorobenzene–methanol (CB–MET), 1,2 dichloro ethane–methanol (DE–MET) and dimethylene chloride–methanol (DC–MET) mixtures with thirteen different concentrations at three temperatures, viz., 15, 25 and 45°C. The experimental technique used for this work was the time domain reflectometry (TDR) in the frequency range of 10 MHz to 20 GHz using the Hewlett Packard HP 54750 sampling oscilloscope. The information regarding hydrogen bonding structural behavior in MET due to CB, DE and DC are obtained by using the theoretical models based on the excess properties. The data suggest that CB and DE are not influenced by hydrogen bonding in MET whereas DC is influenced by the hydrogen bonding mechanism in MET. It appears that the behavior of DC on MET is different from CB and DE in MET.

[学科分类] 物理（综合）

[关键词] Time domain reflectometry;excess parameters;chloro group molecules;dielectric relaxation time;dielectric constant.