| Summary: | 碩士 === 明志科技大學 === 化學工程研究所 === 100 === This study reports on the synthesis and the physical properties of ionic liquid of 1-isoalkyl-3-methylimidazolium bromide [i-Cnmim][Br], (n＝3,4,5)。The values of density, refractive index , viscosity and conductivity at temperature range from 298.15 to 338.15 K were measured and reported for the 1-isoalkyl-3-methylimidazolium bromide ionic liquid。Empirical correlations were proposed to represent the present experimental data。The density, refractive index and viscosity values decrease with increasing temperature。The density and refractive index values decrease with the increases in the length of the alkyl chain in the imidazolium cation。The viscosity value increase with increasing in the length of the alkyl chain in the imidazolium cation 。The conductivity values increase with increasing temperature。
In the study，densities , refractive index and viscosity of the 1-isoalkyl-3-methylimidazolium bromide, in water ,methanol , ethanol ,1-propanol and 1-butanol at a temperature range from 298.15 to 338.15 K and atmospheric pressure were measured over the whole composition range。Excess molar volumes , refractive index deviations and viscosity deviations for the binary systems were calculated 。These results were fitted to a Redlich-kister equation to determine the fitting parameters and the root mean square deviations。
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