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本文用中和法合成了基于烷基咪唑的甘氨酸离子液体[C3mim][Gly](1-丙基-3-甲基咪唑甘氨酸离子液体)和[C4mim][Gly](1-丁基-3-甲基咪唑甘氨酸离子液体),在298.15K下,0.0400～0.5000molkg-1浓度范围内测定了不同浓度[C4mim][Gly]和[C3mim][Gly]离子液体水溶液的密度和表面张力,得到了溶液等张比容的实验值,提出了预测不同浓度溶液等张比容的经验方程,利用这个经验方程和李以圭等人提出的溶液表面张力模型,分别估算了这两种离子液体水溶液的表面张力,其估算值和实验值在误差范围内很好地吻合.
In this paper, alkylimidazole-based glycine ionic liquid [C3mim] [Gly] (1-propyl-3-methylimidazolium glycine ionic liquid) and [C4mim] [Gly] - methylimidazolium glycine ionic liquid), the density and surface tension of aqueous solutions of [C4mim] [Gly] and [C3mim] [Gly] ionic liquids at different concentrations of 0.0400-0.5000molkg-1 were measured at 298.15K to obtain The experimental value of the isotonic solution of the solution was proposed and the empirical equation for predicting the specific volume of solution of different concentration was put forward. By using this empirical equation and the solution surface tension model proposed by Li et al., Respectively, the surface tension of the two ionic liquids was estimated. The values agree well with the experimental values within the error range.