Experiments And Calculations For The Surface Property And Viscosity Of DMA2P-Ionic Liquids Aqueous Solutions

The surface tensions and viscosities of DMA2P（1-dimethylamino-2-propyl alcohol）-ionic liquids aqueous solutions were measured by using the BZY-1 surface tension meter and NDJ-5S rotational viscometer,respectively.The temperature ranging from 303.2K to 323.2 K.The mass fractions of DMA2P ranging from 0.30 to0.50,besides,the mass fraction of[N₁₁₁₁][Gly]（Tetramethylammonium glycine salt）,[Bmim][Lys]（1-butyl-3-methylimidazolide）and[Bmim][Gly]（1-butyl-3-methyl-imidazolide salt）ranging from 0.025 to 0.075.Thermodynamic equations were proposed to model the surface tensions and viscosities of DMA2P-ionic liquids aqueous solutions and the calculated results agreed well with the experiments.The effects of temperature,mass fractions of DMA2P and ionic liquids on the surface tensions and viscosities were demonstrated on the basis of experiments and calculations.Our experimental results showed that:（1）The increase of the temperature tends to decrease both the surface tensions and viscosities of DMA2P-ionic liquids aqueous solutions.（2）At a given mass fraction of DMA2P,the increases of the mass fractions of ionic liquids respectively decrease the surface tension and increase the viscosity of DMA2P aqueous solutions.（3）The proposed models correctly capture the effects of temperature,mass fractions of ionic liquids on the surface tensions and viscosities.