Glass transition behaviour of the quaternary ammonium type ionic liquid, {[DEME][I] + H2O} mixtures

被引：8

作者：

Imai, Yusuke ^{[2
]}

Abe, Hiroshi ^{[2
]}

Matsumoto, Hitoshi ^{[2
]}

Shimada, Osamu ^{[3
]}

Hanasaki, Tomonori ^{[3
]}

Yoshimura, Yukihiro ^{[1
]}

机构：

[1] Natl Def Acad, Dept Appl Chem, Kanagawa 2398686, Japan

[2] Natl Def Acad, Dept Mat Sci & Engn, Kanagawa 2398686, Japan

[3] Ritsumeikan Univ, Dept Appl Chem, Shiga 5258577, Japan

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2011年 / 43卷 / 03期

关键词：

Ionic liquid; Glass-formation region; Double glass transition; DTA; Raman spectroscopy; NANOSTRUCTURAL ORGANIZATION; TEMPERATURE; MIXTURES; WATER; TETRAFLUOROBORATE; DEPENDENCE; RADII; STATE;

D O I：

10.1016/j.jct.2010.10.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

By a simple DTA system, the glass transition temperatures of the quaternary ammonium type ionic liquid, {N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium iodide, [DEME][I] + H2O} mixtures after quick pre-cooling were measured as a function of water concentration (x mol% H2O). Results were compared with the previous results of ([DEME][BF4]+ H2O) mixtures in which double glass transitions were observed in the water concentration region of (16.5 to 30.0) mol% H2O. Remarkably, we observed the double glass transition phenomenon in {[DEME][I]+ H2O} mixtures too, but the two-T(g)s regions lie towards the water-rich side of (77.5 to 85.0) mol% H2O. These clearly reflect the difference in the anionic effect between BF4- and I- on the water structure. The end of the glass-formation region of {[DEME][I] + H2O} mixtures is around x = 95.0 mol% H2O, and this is comparable to that of {[DEME][BF4]+ H2O} mixtures (x = 96.0 mol% H2O). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：319 / 322

页数：4

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