PATTERNS OF MOLECULAR AGGREGATION IN AQUEOUS MIXTURES OF SPECIES OF THE TYPE-CME2M+1.(OC2H4)N.OH .1. APPLICATIONS OF AN EMPIRICAL-MODEL TO SOME CME0 PLUS WATER-SYSTEMS

A rationale is given for the four-segment composition approach to the analysis and interpretation of the thermodynamic properties of binary amphiphile plus water systems. The hypothesis is introduced that there exist, within isotropic binary water plus amphiphile mixtures, labile patterns of molecular aggregation which resemble the more stable schemes that are observed in water plus non-ionic detergent systems. The nature of such patterns of molecular aggregation varies from one composition range to another in a manner which is reflected by changes in the composition dependence of the macroscopic properties. A new version of the four-segment model equations was devised to explore, in more detail, the nature of the composition dependence of thermodynamic properties in that composition segment which corresponds to a range of varying micellar geometries.