Thermophysical properties of a room temperature ionic liquid (1-methyl-3-pentyl-imidazolium hexafluorophosphate) with poly(ethylene glycol)
Thermophysical properties of a room temperature ionic liquid (1-methyl-3-pentyl-imidazolium hexafluorophosphate) with poly(ethylene glycol)
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DOI：
10.1016/j.jtice.2011.04.006
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发表时间：
2011-11
影响因子：
5.7
通讯作者：
Tzi-Yi Wu;Bor-Kuan Chen;Lin Hao;Keng-Fu Lin;I-Wen Sun
中科院分区：
文献类型：
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作者：
Tzi-Yi Wu;Bor-Kuan Chen;Lin Hao;Keng-Fu Lin;I-Wen Sun
在整个组成范围内测量了1-甲基-3-戊基咪唑鎓六氟磷酸盐[MPI][PF 6]与聚乙二醇（PEG）[Mw=200]的二元混合物的物理性质，如密度ρ、粘度η、折射率n和电导率κ。过量摩尔体积，VE，计算使用测量的实验密度和相关的Redlich-Kister型方程。关联结果与实验数据吻合较好，并给出了最佳拟合参数。在测试范围内的所有VE值均为负值，并且随着温度的升高而继续变得越来越负。在T=293.15-353.15K范围内，利用经验关系式从实验密度结果计算了热膨胀系数。粘度的偏差Δη和折射率的偏差Δ n分别由粘度η和折射率n的实验测量值计算，并使用Redlich-Kister多项式方程拟合以获得二元系数和标准偏差。
Physical properties such as density, ρ, viscosity, η, refractive index, n, and conductivity, κ, for the binary mixtures of 1-methyl-3-pentyl-imidazolium hexafluorophosphate [MPI][PF6] with poly(ethylene glycol) (PEG) [Mw=200] are measured over the whole composition range. The excess molar volumes, VE, are calculated using the measured experimental densities and correlated using the Redlich–Kister type equation. The correlation results are in agreement with the experimental data, and optimal fitting parameters are present. All the VEvalues within the tested range are negative, and continue to become increasingly negative with increasing temperature. The coefficients of thermal expansion are calculated from the experimental density results using an empirical correlation for T=293.15–353.15K. Deviations in viscosity, Δη and the refractive index, Δϕn, are calculated from experimental measurements of viscosity, η and refractive index, n, respectively and are fitted using the Redlich–Kister polynomial equation to obtain the binary coefficients and the standard deviations.