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.© (1992) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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