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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Apparent Molar Volumes and Viscosity B-Coefficients of Some Amino Acids in Aqueous Tetramethylammonium Iodide Solutions at 298.15 K
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Apparent Molar Volumes and Viscosity B-Coefficients of Some Amino Acids in Aqueous Tetramethylammonium Iodide Solutions at 298.15 K

机译：四甲基碘化铵水溶液在298.15 K时某些氨基酸的表观摩尔体积和粘度B系数

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摘要

Apparent molar volumes and viscosity B-coefficients of glycine,L-alanine,and L-valine in 0.05,0.10,and 0.15 mol·dm~(-3)aqueous tetramethylammonium iodide(TMAI)solutions have been determined at 298.15 K from density and viscosity measurements.The standard partial molar volumes,standard volumes of transfer,and hydration number of the amino acids have been calculated for rationalizing various interactions in the ternary solutions.It has been found that the partial molar volume and viscosity B-coefficient varies linearly with the number of carbon atoms in the alkyl chain of the amino acids,and they were split into contributions from charged end groups(NH_3~+,COO~-)and the CH2-group of amino acids.Furthermore,the side chain contribution to the partial molar volume and viscosity B-coefficient of the amino acids has been determined using a group additivity approach.The results have been discussed in terms of ion-dipolar,hydrophobic-hydrophobic,and hydrophilic-hydrophobic group interactions.
机译：由密度和密度在298.15 K下确定了甘氨酸，L-丙氨酸和L-缬氨酸在0.05,0.10和0.15 mol·dm〜（-3）碘化四甲基铵（TMAI）水溶液中的表观摩尔体积和粘度B系数。计算了标准的部分摩尔体积，标准的转移体积和氨基酸的水合数以合理化三元溶液中的各种相互作用。已发现部分摩尔体积和粘度B系数随线性变化氨基酸烷基链中的碳原子数，并将其分为带电荷的端基（NH_3〜+，COO〜-）和氨基酸的CH2-。此外，侧链对氨基酸的贡献使用基团加和法确定了氨基酸的部分摩尔体积和粘度B系数。对结果进行了离子偶极，疏水-疏水和亲水-疏水基团相互作用的讨论。

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