Abstract In this paper we report new density and viscosity data of l -serine and l -valine in aqueous NaCl solutions as a function of amino acids molality at fixed salt concentration (0.1, 0.2, 0.5, 0.7 and 1.0 mol·kg−1) and temperature T = (293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K at atmospheric pressure of p = 0.1 MPa. From density, some derived properties such as the apparent molar volume, V ϕ , limiting partial molar volume, V ϕ 0 , and expansibility, E ϕ 0 , standard molar volume of transfer, Δ V ϕ 0 , and hydration number, n H , were calculated and discussed in terms of solute–solvent interactions and structural effects. The Jones–Dole equation and transition state treatment were used to obtain the viscosity B coefficient, free energy of activation of viscous flow per mole of solvent, Δ μ 1 0 # , and per mole of solute, Δ μ 2 0 # , entropies, Δ S 2 0 # , and enthalpies, Δ H 2 0 # , of activation of viscous flow for amino acids. All the activation parameters were discussed in terms of transition state theory. The co-sphere overlap model was used to interpret the results. The structure making/breaking ability of the amino acids in solutions was also discussed.

中文翻译：

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在温度范围 (293.15–323.15) K 下，L-丝氨酸和 L-缬氨酸三元溶液在 NaCl 水溶液中的体积和传输特性

摘要 在本文中，我们报告了 NaCl 水溶液中 l-丝氨酸和 l-缬氨酸的新密度和粘度数据作为固定盐浓度（0.1、0.2、0.5、0.7 和 1.0 mol·kg-1）下氨基酸摩尔浓度的函数和温度 T = (293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K 在 p = 0.1 MPa 的大气压下。从密度，一些派生的属性，例如表观摩尔体积 V ϕ 、极限偏摩尔体积 V ϕ 0 和膨胀性 E ϕ 0 、标准转移摩尔体积 Δ V ϕ 0 和水合数 n H ，根据溶质 - 溶剂相互作用和结构效应进行计算和讨论。利用琼斯-多尔方程和过渡态处理获得粘度 B 系数、每摩尔溶剂的粘性流动活化自由能、Δ μ 1 0 # 和每摩尔溶质，Δ μ 2 0 # ，熵，Δ S 2 0 # ，和焓，Δ H 2 0 # ，氨基酸粘性流的活化。所有激活参数都根据过渡态理论进行了讨论。共球重叠模型用于解释结果。还讨论了溶液中氨基酸的结构形成/破坏能力。