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      Modification of the Two-Point Scaling Theory for the Description of the Phase Transition in Solution. Analysis of Sodium Octanoate Aqueous Solutions

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          Abstract

          On the basis of conventional scaling theory, the two-point scaling theory was modified in order to describe the influence of composition on the partial molar heat capacity and volume during the micellization process. To verify the theory, isobaric heat capacities and densities of aqueous sodium octanoate solutions were measured over wide composition and temperature ranges and the modified approach was used to analyze the calculated partial molar heat capacities and volumes of the surfactant in water. The results obtained indicate that the micellization process is subject to the scaling laws. The results were compared with those for other systems. Peculiar behavior of the critical indices was observed and correlated with the structure of the micelles.

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          The online version of this article (doi:10.1007/s10953-012-9795-6) contains supplementary material, which is available to authorized users.

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          Precise representation of volume properties of water at one atmosphere

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            Computer simulation of surfactant solutions

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              Microheterogeneity in aqueous-organic solutions: Heat capacities, volumes and expansibilities of some alcohols, aminoalcohol and tertiary amines in water

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                Author and article information

                Contributors
                kchfpiek@uni.lodz.pl
                Journal
                J Solution Chem
                Journal of Solution Chemistry
                Springer US (Boston )
                0095-9782
                1572-8927
                2 February 2012
                2 February 2012
                March 2012
                : 41
                : 2
                : 318-334
                Affiliations
                [1 ]Department of Physical Chemistry, University of Łódź, Pomorska 165, 90-236 Łódź, Poland
                [2 ]Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland
                Article
                9795
                10.1007/s10953-012-9795-6
                3298654
                22448076
                2bc741b3-64f7-47a3-a14b-188df071254e
                © The Author(s) 2012
                History
                : 8 November 2010
                : 13 May 2011
                Categories
                Article
                Custom metadata
                © Springer Science+Business Media, LLC 2012

                Analytical chemistry
                scaling theory,phase transition,volume,colloids,heat capacity
                Analytical chemistry
                scaling theory, phase transition, volume, colloids, heat capacity

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