A calorimetric study on interactions of amino acids with sodium dodecylsulfate and dodecyltrimethylammonium bromide in aqueous solutions at 298.15K

作者：Qiu Xiaomei; Lei Qunfang; Fang Wenjun^*; Lin Ruisen

来源：Thermochimica Acta, 2008, 478(1-2): 54-56.

DOI：10.1016/j.tca.2008.09.001

• Amino acid
• Enthalpy of transfer
• Surfactant solution

Enthalpies of solution and transfer of glycine, L-alanine, L-Valine, L-serine and L-threonine from water to aqueous surfactant (sodium dodecyl sulfate or dodecyltrimethylammonium bromide) solutions have been determined at 298.15 K by isothermal calorimetry. Dehydration and ion-ion interactions are important at low concentrations of the surfactant. Hydrophobic-hydrophobic interactions become primary when the amino acid molecules insert into the hydrophobic tail groups of the micelles. These phenomena can be explained with the hydration co-sphere ovelap model.

• 出版日期2008-11-20
• 单位浙江大学