Abstract
Solutions of surfactants of differing concentrations in polyoxypropylene glycol have been investigated by electron microscopy, NMR and surface tension methods. It is shown that the introduction of surfactants leads to a morphological transition in surface layers of the oligoether, and this is related to a change in their energetic and entropic states. In the interval of surfactant concentration from 0 to 0·3% it was found that a 0·03% concentration corresponds to a reorientation of sufractant molecules in surface layers, thus ensuring their stability. The formation of micelles in these solutions at a surfactant concentration of 0·15% is preceded by an extremal type of change in thermodynamic functions of surface layers of the surfactants.
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