98892-76-3Relevant articles and documents
Polymer electrolytes containing ionic liquids with acidic counteranion (DMRImH2PO4, R = ethyl, butyl and octyl)
Lalia, Boor Singh,Sekhon
, p. 294 - 300 (2006)
Ionic liquids with acidic counteranion and having composition: 2,3-dimethyl-1-alkylimidazolium dihydrogenphosphate (DMRImH2PO4, R = ethyl, butyl, octyl) have been prepared and the effect of alkyl (R) sidechain length on the conductiv
Ionic liquid which has a low cellulose decomposition efficiency
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Paragraph 0154; 0157; 0158; 0159, (2017/04/13)
The present invention refers to cellulose decomposition rate of low relates to ionic liquid, the present invention according to ionic liquids compatible ionic liquid and similar or its solubility with cellulose compared to as well as superior, has a remarkably decomposition rate of cellulose disintegration when they dissolve in an unique cellulose therefore, the problem that the components close to by the polyester copolymer. useful. (by machine translation)
Study on thermodynamic properties and estimation of polarity of ionic liquids {[Cnmmim][NTf2] (n = 2, 4)}
Wei, Jie,Ma, Tianyou,Ma, Xiaoxue,Guan, Wei,Liu, Qingshan,Yang, Jiazhen
, p. 30725 - 30732 (2014/08/05)
Two bis(trifluoromethyl sulfonyl)imide ionic liquids [Cnmmim] [NTf2] (n = 2, 4) {1-alkyl-2,3-dimethyimidazolium-N,N- bis(trifluoromethyl sulfonyl)imide} were prepared and characterized by 1H NMR spectroscopy and differential scanning calorimetry (DSC). The values of their density, surface tension and refractive index were measured in the temperature range of (298.15 to 338.15 ± 0.01) K and the average contributions to the density, surface tension, and refractive index per methyl group in the alkyl chain and the addition of a methylene group in the imidazolium ring for the ILs were discussed. The dependence of volumetric properties, surface properties and molar refraction on temperature was discussed. Based on Kabo's method and Verevkin's experimental values, the molar enthalpies of vaporization, ΔHv, for [Cnmmim] [NTf2] (n = 2, 4) were estimated. As a new idea, it was put forward that ΔHv can be assumed to consist of two parts: a part corresponds with the induced energy, ΔHvn, and another part corresponds with orientation energy from the permanent dipole moment of the ion pair in ILs, ΔHvμ. The values of ΔHvn were calculated in terms of the Lawson-Ingham equation so that the values of ΔHvμ could be estimated. Using the values of ΔHv, ΔH vn and ΔHvμ, cohesive energy density, δ2 (δ is Hildebrand solubility parameter), the contribution of induced energy, δn2, and the contribution of orientation energy, δμ2, were obtained. If a liquid only has δn then it is a non-polar liquid and if a liquid not only has δn, but also has δμ then it is a polar liquid. Since the ion pairs in ILs have a permanent dipole moment, the ionic liquid has a certain polarity. Therefore, using δμ as the polarity scaling of ILs is very convenient because the values of δμ are very easy to calculate from the enthalpy of vaporization and refractive index data.
