Phase behavior of C18 monoglyceride in hydrophobic solutions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)432-439
Journal / PublicationSoft Matter
Volume5
Issue number2
Online published5 Nov 2008
Publication statusPublished - 21 Jan 2009
Externally publishedYes

Abstract

We apply a set of different techniques to analyze the physical properties and phase transitions of monoglycerides (MGs) in oil. In contrast to many studies of MGs in water or aqueous systems, we find a significant difference in the phase structure at different concentrations and temperatures. By adding small quantities of water to our base MG/oil systems we test the effect of hydration of surfactant head-groups, and its effect on the phase behavior. The phase diagrams are determined by calorimetry and their universal features are recorded under different conditions. Two ordered phases are reported: the inverse lamellar gel phase and the sub-alpha crystalline gel phase. This sequence is very different from the structures in MG/water; its most striking feature is the establishing of a 2D densely packed hexagonal order of glycerol heads in the middle of inverse lamellar bilayers. Rheology was examined through temperature scans to demonstrate the gelation phenomenon, which starts from the onset of the lamellar phase during the cooling/ordering process. © 2009 The Royal Society of Chemistry.

Citation Format(s)

Phase behavior of C18 monoglyceride in hydrophobic solutions. / Chen, C. H.; Van Damme, I.; Terentjev, E. M.

In: Soft Matter, Vol. 5, No. 2, 21.01.2009, p. 432-439.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review