Abstract
Densities for 1-allyl-3-methylimidazolium chloride ([Amim]Cl)–sucrose–water solutions were measured at 298.15 K. These data were used to calculate the apparent molar volumes of sucrose (VΦ,S) and [Amim]Cl (VΦ,IL) in the studied solutions. Infinite dilution apparent molar volumes, VΦ,S0 and VΦ,IL0, were also obtained, together with the standard transfer volumes of the sucrose (ΔtVS0) from water to aqueous solutions of [Amim]Cl and those of [Amim]Cl (ΔtVIL0) from water to aqueous sucrose solution. Additionally, the system studied here was compared with 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4)–sucrose–water mixture. It was shown that the ΔtVS0 and ΔtVIL0 values are positive and increase with increasing molalities of ILs and sucrose, respectively, and the ΔtVS0 and ΔtVIL0 values have the order of [Amim]Cl > [Bmim]BF4. Additionally, the volumetric interaction parameters for ionic liquid (IL)–sucrose pairs in water were also obtained and interpreted by the structural interactions model.
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