A new theory for ionic liquids—the Interstice Model : Part 1. The density and surface tension of ionic liquid EMISE

Yang, Jia-Zhen; Lü, Xingmei; Gui, Jin-Song; Xu, Weiguo

doi:10.1039/b412286k

Cited by 194 publications

(190 citation statements)

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“…According to the interstice model 28 (8) where k b is the Boltzmann constant, T is the thermodynamic temperature, and γ is the surface tension.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Some important thermodynamic parameters like standard molar entropy and lattice energy were estimated in terms of Glasser's theory, 25 and the parachor was estimated by an empiric equation from the literature. 26 In terms of Kabo's empirical equation 27 and interstice model theory, 28 the molar enthalpy of vaporization, the interstice volume, interstice fraction, and thermal expansion coefficient of the IL were also estimated. The dynamic viscosity or the electrical conductivity of the IL as a function of temperature were described by the Vogel−Fulcher−Tammann (VFT) method and Arrhenius equations, respectively.…”

Section: ■ Introductionmentioning

confidence: 99%

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Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

et al. 2012

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An air- and water-stable hydrophobic ionic liquid N-butyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide ([c43mpy][NTf2]) was synthesized and characterized. Density, surface tension, dynamic viscosity, and electrical conductivity of the IL were measured and calculated from (278.15 to 353.15) K. The glass transition temperature and decomposition temperature were determined by the differential scanning calorimetry and thermogravimatric analysis. The physicochemical properties like molecular volume, standard molar entropy, lattice energy, parachor, molar enthalpy of vaporization, interstice volume, thermal expansion coefficient, interstice fraction, etc. of the IL were estimated by the reported empirical and semiempirical equations. The dynamic viscosity and electrical conductivity data of the IL were described by Vogel–Fulcher–Tamman and Arrhenius equations, respectively. Then, the relationship between the molar conductivity and dynamic viscosity of this IL was expressed through the Walden rule.

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“…According to the interstice model 28 (8) where k b is the Boltzmann constant, T is the thermodynamic temperature, and γ is the surface tension.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

et al. 2012

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“…According to the interstice model, 21,22 the interstice volume, v, can be estimated by classical statistical mechanics:…”

mentioning

confidence: 99%

“…20 The interstice volume, interstice fraction, and thermal expansion coefficient were estimated by the interstice model theory. 21,22 The VogelÀFulcherÀTammann (VFT) and Arrhenius equations were used to fit the temperature dependence on dynamic viscosity and electrical conductivity values.' EXPERIMENTAL SECTION Preparation of ILs [C n py][NTf 2 ] (n = 3, 6). N-Alkylpyridinium bromide ([C n py][Br], n = 3, 6) was synthesized according to the procedure described in earlier paper.…”

mentioning

confidence: 99%

Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]

Liu

Yang

et al. 2011

J. Chem. Eng. Data

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Air-and water-stable hydrophobic ionic liquids N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([C n py][NTf 2 ], n = 3, 6) were synthesized. The density, surface tension, dynamic viscosity, and electrical conductivity of [C 6 À ILs as a hydrophobic compound has attracted much more attention in some fields. 5À8Tokuda et al. 9 have studied the properties of a series of imidazolium-based ILs, for example, the melting temperature, glass transition temperature, dynamic viscosity, and electrical conductivity. The melting temperatures are lower than room temperature, so these ILs are liquid at room temperature; the decomposition temperatures are higher than 690 K, so these ILs exhibit excellent thermal stability. The electrical conductivities are also high enough to be applied in electrochemical devices. Oliveira et al.10 studied the properties of a series of pyridiniumbased ILs. The density and dynamic viscosity of the dried and saturated ILs were studied. The water content has a strong effect on the dynamic viscosity, but only a very small effect on density was observed. Jacquemin et al.11 have also studied the density and dynamic viscosity of several pure and watersaturated ILs. The same results were obtained for the effect of water content on the density and dynamic viscosity. The ILs with [NTf 2 ] À anion were studied widely because this type of ILs has a relatively low viscosity, a wide electrochemical window, and a high electrical conductivity to be applied in the electrochemical devices. 12À16In view of the above facts, the density, surface tension, dynamic viscosity, and electrical conductivity of the ILs [C n py][NTf 2 ] (n = 3, 6) were measured at different temperatures, except for the surface tension of [C 3 py][NTf 2 ]. The speed of sound was estimated by the Auerbach relation at the different temperatures. 17The standard molar entropy and lattice energy were estimated in terms of Glasser's theory. 18 Parachor was estimated by the equation reported in the ref 19. The molar enthalpy of vaporization was estimated in terms of Kabo's empirical equation. 20 The interstice volume, interstice fraction, and thermal expansion coefficient were estimated by the interstice model theory. 21,22 The VogelÀFulcherÀTammann (VFT) and Arrhenius equations were used to fit the temperature dependence on dynamic viscosity and electrical conductivity values.' EXPERIMENTAL SECTION Preparation of ILs [C n py][NTf 2 ] (n = 3, 6). N-Alkylpyridinium bromide ([C n py][Br], n = 3, 6) was synthesized according to the procedure described in earlier paper. 23 [C n py][NTf 2 ], n = 3, 6, were synthesized according to the ion exchange reaction. The 80 g of salt [C n py][Br], n = 3, 6 was placed in a 500 mL roundbottomed flask and dissolved in 30 mL of distilled water; the equivalent amount of bis(trifluoromethanesulfonyl)imide (HN-(SO 2 CF 3 ) (Rhodia Co., mass purity 99.9 %) was added dropwise

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“…Although the dynamics of Newtonian liquids are usually constrained by the gravitational force, this principle does not apply any more in such small dimensions [43]. The RTIL's surface tension (c ¼ 48.79 Â 10 À4 N Á m À1 [44]) therefore govern the RTIL's flow, and, with the help of the mesh layer, constrains the RTIL to flow undivided through all the networked microchannels. Indeed, the mesh layer holes are approximately 170 times smaller than the cross-sectional area of the microchannel and allow the air to vent out while being small enough to act decisively on the RTIL's surface tension.…”

Section: Tomographic Imaging and Il Microchannel Embedded Silicone Sementioning

confidence: 99%

Soft Tactile Skin Using an Embedded Ionic Liquid and Tomographic Imaging

Chossat

Shin

Park

et al. 2015

Journal of Mechanisms and Robotics

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Whole-body-contact sensing will be crucial in the quest to make robots capable of safe interaction with humans. This paper describes a novel design and a fabrication method of artificial tactile sensing skin for robots. The manufacturing method described in this paper allows easy filling of a complex microchannel network with a liquid conductor (e.g., room temperature ionic liquid (RTIL)). The proposed sensing skin can detect the magnitude and location of surface contacts using electrical impedance tomography (EIT), an imaging technique mostly used in the medical field and examined recently in conjunction with sensors based on a piezoresistive polymer sheet for robotic applications. Unlike piezoresistive polymers, our IL-filled artificial skin changes its impedance in a more predictable manner, since the measured value is determined by a simple function of the microchannel geometry only, rather than complex physical phenomena. As a proof of concept, we demonstrate that our EIT artificial skin can detect surface contacts and graphically show their magnitudes and locations.

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A new theory for ionic liquids—the Interstice Model : Part 1. The density and surface tension of ionic liquid EMISE

Cited by 194 publications

References 16 publications

Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]

Soft Tactile Skin Using an Embedded Ionic Liquid and Tomographic Imaging

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A new theory for ionic liquids—the Interstice Model : Part 1. The density and surface tension of ionic liquid EMISE

Cited by 194 publications

References 16 publications

Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

Study on Thermodynamic Properties of Ionic Liquid N-Butyl-3-methylpyridinium Bis(trifluoromethylsulfonyl)imide

Physicochemical Properties of Ionic Liquids [C3py][NTf2] and [C6py][NTf2]

Soft Tactile Skin Using an Embedded Ionic Liquid and Tomographic Imaging

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Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]