Determination of micelle/water partition coefficients and associated thermodynamic data for dialkyl phthalate esters

Laura J. Waters, S. A. Leharne, J. C. Mitchell, J. P. Hanrahan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Micelle/water partition coefficients for three dialkyl phthalate esters - dimethyl phthalate ester (DMP), diethyl phthalate ester (DEP) and dipropyl phthalate ester (DPP) were obtained by micellar liquid chromatography (MLC). Experiments were conducted over a temperature range which led to calculation of a Gibbs free energy, enthalpy and entropy of transfer for the phthalate esters. In addition, small angle neutron scattering (SANS) experiments were conducted with no substantial change observed in micelle size before and after phthalate ester incorporation. Overall, a novel method for obtaining thermodynamic information, based on partitioning data, has been developed for dialkyl phthalate esters using micellar liquid chromatography.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume90
Issue number1
Early online date13 Feb 2007
DOIs
Publication statusPublished - 22 Sep 2007

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