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首页> 外文期刊>Journal of the Indian Chemical Society >Volumetric properties of some n-alkoxyethanols with alkyl acetates at the temperature 298.15 K
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Volumetric properties of some n-alkoxyethanols with alkyl acetates at the temperature 298.15 K

机译：一些正烷氧基乙醇与乙酸烷基酯在298.15 K温度下的体积性质

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摘要

The excess molar volumes V~E for binary liquid mixtures (n-alkoxyethanols + methyl acetate, ethyl acetate, propyl acetate) have been measured as a function of composition using a continuous dilution dilatometer at 298.15 K and atmospheric pressure over the whole mole fraction range. The n-alkoxyethanols are ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether. The V~E for each of the mixtures are negative with the exception of propyl acetate + ethylene glycol monomethyl ether and change sign for methyl acetate + ethyl acetate ++ ethylene glycol monomethyl ether, or diethylene glycol monobutyl ether and ethyl acetate + ethylene glycol monomethyl ether. For each case, the V~E increases as the polar head group of the alkoxyethanol increases and decreases with increasing alkyl chain-length. The excess partial molar volume V_I~E of the components are evaluated form the V~E results. The results are discussed on the basis of molecular interaction present in alkoxyethanol-alkyl acetate mixtures.
机译：使用连续稀释膨胀计在298.15 K和大气压下在整个摩尔分数范围内测量了二元液体混合物（正烷氧基乙醇+乙酸甲酯，乙酸乙酯，乙酸丙酯）的过量摩尔体积V E与组成的关系。 。正烷氧基乙醇是乙二醇单甲基醚，二乙二醇单甲基醚，三乙二醇单甲基醚，二乙二醇单乙基醚和二乙二醇单丁基醚。每种混合物的V〜E均为负值，但乙酸丙酯+乙二醇单甲醚除外，乙酸甲酯+乙酸乙酯++乙二醇单甲醚或​​二乙二醇单丁醚和乙酸乙酯+乙二醇单甲基醚的变化符号醚。在每种情况下，随着烷氧基乙醇的极性头基的增加和减少，V_E随烷基链长的增加而增加。从V〜E结果评估组分的过量部分摩尔体积V_E〜E。在烷氧基乙醇-乙酸烷基酯混合物中存在的分子相互作用的基础上讨论了结果。

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