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在283.15 333.15 K温度范围内,测量了质子型离子液体N,N-二甲基乙醇胺丙酸盐(DMEOAP)的密度、粘度及电导率.讨论了温度对密度、粘度和电导率等物理化学参数的影响.通过经验和半经验方程得到了该离子液体的热膨胀系数、分子体积、标准摩尔熵及晶格能等热力学性质参数.由电导率和密度计算出了该离子液体的摩尔电导率.利用Vogel-Fulcher-Tamman(VFT)方程,将测量的动力粘度和电导率对温度拟合,得到了动力粘度和电导率随温度变化方程式.并通过Walden规则,建立了粘度与摩尔电导率之间的联系.
The density, viscosity and conductivity of the proton ionic liquid N, N-dimethylethanolamine propionate (DMEOAP) were measured in the temperature range of 283.15 to 333.15 K. The influences of temperature on the physicochemical parameters such as density, viscosity and conductivity The thermal conductivity, ionic strength, molecular weight, standard molar entropy, lattice energy and other thermodynamic parameters of the ionic liquid were obtained by empirical and semi-empirical equations.The molar conductivity of the ionic liquid was calculated from its conductivity and density. Vogel-Fulcher-Tamman (VFT) equation, the kinetic viscosity and conductivity of the measured viscosity and conductivity were fitted to the temperature, and the equation of dynamic viscosity and conductivity with temperature was obtained. According to Walden’s rule, the relationship between viscosity and molar conductivity contact.