氯化胆碱
深共晶溶剂
乙二醇
共晶体系
二甲基亚砜
溶剂
粘度
电导率
化学
氯化物
二进制数
有机化学
材料科学
无机化学
物理化学
复合材料
合金
算术
数学
作者
Ali Reza Harifi-Mood,Richard Buchner
标识
DOI:10.1016/j.molliq.2016.10.115
摘要
Abstract Density, dynamic viscosity, and electrical conductivity of binary mixtures of ethaline (choline chloride + ethylene glycol at molar ratio 1:2) as a deep eutectic solvent (DES) with dimethyl sulfoxide were measured under atmospheric pressure at temperatures, T, from (308.15 to 363.15) K covering the entire mixture range. The mixtures exhibited negative excess molar volumes, VE, with a minimum at ethaline mole fractions of ×1 ≈ 0.4…0.5 that became more pronounced with increasing temperature. A similar minimum was found for the excess viscosity, Δη, of the mixtures. However, in contrast to VE the minimum of Δη became more shallow with increasing T. As expected, the electrical conductivity of the mixtures increased monotonically with increasing ×1 and T. The temperature dependence of viscosity and conductivity is well described by the Vogel − Fulcher − Tamman (VFT) equation.
科研通智能强力驱动
Strongly Powered by AbleSci AI