Solvent-Solute Interaction in an Lα Phase Formed With Water, Ethylene Glycol and Lecithin

The variation in the order parameter with the ethylene glycol/water ratio was determined by deuterium HMR groups in ethylene glycol were determined in an L liquid crystalline phase of lecithin, water and ethylene glycol. In addition, the interlayer spacing was determined by small angle X-ray diffractometry. The results were described using a simple two-component adsorption model and showed no substantial variation between water and ethylene glycol of their binding affinity to the polar groups of the lecithin 31 P NMR results supported earlier proton NMR spectra interpretation of an increased disorder of the amphiphiles with greater amount enhanced of ethylene glycol/water ratio.