FTIR linear study of transition from a lamellar to an inverted micellar phase

Anders Nilsson; Allan Holmgren

doi:10.1117/12.56446

1 March 1992 FTIR linear study of transition from a lamellar to an inverted micellar phase

Anders Nilsson, Allan Holmgren

Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56446
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

Abstract

The lamellar (L(alpha )) and inverted micellar (L2) phases of the system monooleoylglycerol/water (MO/water), have been studied by FTIR-spectroscopy, using the linear dichroism (LD) technique. The order parameter of functional groups in MO are calculated. These order parameters were examined during the thermotropic phase transition from the oriented lamellar phase to the isotropic inverted micellar phase. When the temperature is increased the order parameter of the MO molecules decreases faster in the polar head region as compared with the acyl chain region. At the phase transition temperature (43 degree(s)C) the order parameter (S) approaches zero. The half-width of the carbonyl band increases 2 cm-1 when the temperature is increased from 30 degree(s)C to 45 degree(s)C. This increase may be due to an increased hydration of the carbonyl group.

Citation Download Citation

Anders Nilsson and Allan Holmgren "FTIR linear study of transition from a lamellar to an inverted micellar phase", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56446

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