Abstract Density and speed of sound of an aqueous solution of glycine and L-valine containing 1-dodecyl-3-methylimidazolium bromide, [C12mim] [Br], have been determined at T= (288.15 K to 308.15 K). From experimental density, the apparent molar volumes (Vϕ), the apparent molar volumes at infinite dilution ( V ϕ 0 ) and partial molar volume of transfer Δ V ϕ 0 have been calculated. The values of apparent molar volumes (Vϕ) are positive for both glycine and L-valine and increase with the increase in temperature and concentration of 1-dodecyl-3-methylimidazolium bromide. On the other hand speed of sound data have been used to determine partial molar isentropic compression (Kϕ,s), partial molar isentropic compression at infinite dilution ( K ϕ , s 0 ) and partial molar isentropic compression of transfer Δ K ϕ , S 0 . The obtained volumetric and acoustic parameters will be helpful to understand mixing effects, structural changes and other complex biological processes between head and side-chain groups of glycine or L-valine and ionic liquid [C12mim] [Br] in aqueous medium.

中文翻译：

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不同温度下三元 {氨基酸 + 1-十二烷基-3-甲基咪唑溴化 [C12mim] [Br] + 水} 混合物中（溶质-溶质）和（溶质-溶剂）相互作用的研究

摘要 含有 1-十二烷基-3-甲基咪唑鎓溴化物 [C12mim] [Br] 的甘氨酸和 L-缬氨酸水溶液的密度和声速已在 T=（288.15 K 至 308.15 K）下测定。根据实验密度，计算了表观摩尔体积 (Vϕ)、无限稀释时的表观摩尔体积 (V ϕ 0 ) 和转移的部分摩尔体积 Δ V ϕ 0。表观摩尔体积 (Vφ) 值对于甘氨酸和 L-缬氨酸均为正值，并且随着温度和 1-十二烷基-3-甲基咪唑鎓溴化物浓度的增加而增加。另一方面，声速数据已被用于确定部分摩尔等熵压缩 (Kϕ,s)、无限稀释时的部分摩尔等熵压缩 (K ϕ , s 0 ) 和转移的部分摩尔等熵压缩 Δ K ϕ , S 0 .