Thermodynamic study of sodium decyl sulfate solutions in the region the second critical micellization concentration: 1. Volumetric and heat capacity properties |
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| Authors: | V S Kuznetsov N V Usol’tseva V P Zherdev V V Bykova |
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| Institution: | 1.Ivanovo State University,Ivanovo,Russia;2.Ivanovo State Architectural and Building University,Ivanovo,Russia |
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| Abstract: | Densitometry and precision adiabatic scanning calorimetry are used to reveal a number of volumetric and heat capacity properties
of sodium decyl sulfate in the region of the second critical micelle concentration. Heat capacities are established in a wide
temperature range. The coefficients of thermal expansion, apparent and partial mole expandabilities, volume, heat capacities,
and excess partial mole heat capacities are calculated. The analysis of variations in these thermodynamic properties occurring
upon variations in concentration and temperature makes it possible to identify the structural variations in sodium decyl sulfate
micelles that are relevant to the transition of micelles from globular to cylindrical forms. |
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