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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Viscosity and molar volume of potassium thiocyanate plus sodium thiocyanate plus acetamide melt systems
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Viscosity and molar volume of potassium thiocyanate plus sodium thiocyanate plus acetamide melt systems

机译：硫氰酸钾加硫氰酸钠加乙酰胺熔融体系的粘度和摩尔体积

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摘要

Density and viscosity of 0.25[xKSCN + (1 - x)NaSCN] + 0.75CH(3)CONH(2) melt systems were measured as functions of temperature (293.15 less than or equal to T/K less than or equal to 343.15) and mole fraction, x = 0.0 to 1.0. The temperature dependence of viscosity has been analyzed by using the Vogel-Tammann-Fulcher (VTF) equation. Molar volumes and intrinsic volume were found to be additive in nature. The existence of the mixed alkali effect (MAE) has been established by the significant negative deviation from the additivity in the ideal glass transition temperature and in the viscosity isotherms. The onset of the MAE in the present system has been explained by the mutual contribution of the polarization effect of SCN- ion on the Na+ ion and the presence of the rigid polymeric type structure, which decrease as the Na+ ions are progressively replaced by the K+ ions. [References: 13]
机译：0.25 [xKSCN +（1-x）NaSCN] + 0.75CH（3）CONH（2）熔体系统的密度和粘度随温度的变化进行测量（293.15小于或等于T / K小于或等于343.15）和摩尔分数，x ＝ 0.0至1.0。粘度的温度依赖性已经通过使用Vogel-Tammann-Fulcher（VTF）方程进行了分析。发现摩尔体积和本征体积本质上是累加的。混合碱效应（MAE）的存在是通过在理想的玻璃化转变温度和粘度等温线中与添加剂的显着负偏差确定的。 MAE在本系统中的发生已通过SCN-离子的极化效应对Na +离子的相互作用和刚性聚合物型结构的存在共同解释，当Na +离子逐渐被K +取代时，刚性聚合物型结构会降低离子。 [参考：13]

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