Journal of Chemical Sciences | |
Excess molar volumes and viscosities of binary mixtures of some polyethers with 1-propanol at 288.15, 298.15, and 308.15 K | |
Anil Kumar1  Amalendu Pal11  | |
[1] Department of Chemistry, Kurukshetra University, Kurukshetra 136 119, India$$ | |
关键词: Excess volumes; viscosity deviations; binary mixtures; polyethers; 1-propanol; Flory theory.; | |
DOI : | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Excess molar volumes ($V_{m}^{E}$) and viscosities (ðœ‚) have been measured as a function of composition for binary liquid mixtures of 1-propanol, C3H7OH, with diethylene glycol diethyl ether (bis(2-ethoxyethyl)ether), C2H5(OC2H4)2OC2H5, and diethylene glycol dibutyl ether (bis(2-butoxyethyl)ether), C4H9(OC2H4)2OC4H9, at 288.15, 298.15, and 308.15 K and at atmospheric pressure. The excess volume results included the following mixing quantities at all range of concentrations and at equimolar concentrations: ð›¼, volume expansivity; (𜕠$V^{E}_{m}$/𜕠ð‘‡)ð‘ƒ, and (𜕠ð»ð¸/ðœ•ð‘ƒ)𑇠at 298.15 K. The obtained results were then compared with the calculated values by using the Flory theory of liquid mixtures. The theory predicts the 𛼠values rather well, while the calculated values of (𜕠$V^{E}_{m}$/𜕠ð‘‡)𑃠and (𜕠ð»ð¸/ðœ•ð‘ƒ)𑇠show variation with alkyl chain length of the polyether. The results are discussed in terms of order or disorder creation. From the viscosity data, deviations in viscosity (𛥠ðœ‚) have been calculated. These values are negative over the entire range of composition. The results for $V^{E}_{m}$, and 𛥠𜂠are discussed in terms of interaction between components.
【 授权许可】
Unknown
【 预 览 】
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