Relaxation Processes in a Dimethylimidazolium Chloride-methanol System

The molecular dynamics method was used to study the short time relaxation processes in the dimethylimidazolium chloride-methanol system at t = 400 k. we demonstrate that the establishment of thermodynamic equilibrium in the dmim+/cl--methanol system is associated with both short-time relaxation processes (β-relaxation) and at relatively long-time relaxation processes. the processes of β-relaxation at t < 5 ps are accompanied by the change in the local structure of the dmim+/cl--methanol system. the relaxation time is ~ 3.6 ps, which is the same as the time it takes the methanol molecule to jump by an inter-particle distance. at t ≥ 35 ps, dynamic processes can be considered within the framework of a relaxation model which describes the structural and dynamic processes in the liquid at relatively large time intervals.