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Appl. Sci. 2018, 8(3), 356; https://doi.org/10.3390/app8030356

Temperature Dependence on Density, Viscosity, and Electrical Conductivity of Ionic Liquid 1-Ethyl-3-Methylimidazolium Fluoride

1
School of Metallurgy, Northeastern University, No. 3-11, Wenhua Road, Shenyang 110819, China
2
Department of Materials Science and Engineering, Southern University of Science and Technology, No. 1088, Xueyuanda Road, Shenzhen 518055, China
3
School of Science, Northeastern University, No. 3-11, Wenhua Road, Shenyang 110819, China
*
Author to whom correspondence should be addressed.
Received: 29 January 2018 / Revised: 25 February 2018 / Accepted: 27 February 2018 / Published: 1 March 2018
(This article belongs to the Section Materials)
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Abstract

Ionic liquids are considered environmentally friendly media for various industrial applications. Basic data on physicochemical properties are significant for a new material, in terms of developing its potential applications. In this work, 1-ethyl-3-methylimidazolium fluoride ([EMIm]F) ionic liquid was synthesized via an anion metathesis process. Physical properties including the density, viscosity, electrical conductivity, and thermal stability of the product were measured. The results show that the density of [EMIm]F decreases linearly with temperature increases, while dynamic viscosity decreases rapidly below 320 K and the temperature dependence of electrical conductivity is in accordance with the VFT (Vogel–Fulcher–Tammann) equation. The temperature dependence of the density, conductivity, and viscosity of [EMIm]F can be expressed via the following equations: ρ = 1.516 − 1.22 × 10−3 T, σm = 4417.1exp[−953.17/(T − 166.65)] and η = 2.07 × 10−7exp(−5.39 × 104/T), respectively. [EMIm]F exhibited no clear melting point. However, its glass transition point and decomposition temperature are −71.3 °C and 135 °C, respectively. View Full-Text
Keywords: ionic liquids; imidazolium; viscosity; conductivity; density ionic liquids; imidazolium; viscosity; conductivity; density
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Liu, F.; Zhong, X.; Xu, J.; Kamali, A.; Shi, Z. Temperature Dependence on Density, Viscosity, and Electrical Conductivity of Ionic Liquid 1-Ethyl-3-Methylimidazolium Fluoride. Appl. Sci. 2018, 8, 356.

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