OPTIMIZATION OF W/O-S EBHULSIONS AND STUDY OF THE QUANTITATIVE RELATIONSHIPS BETWEEN ESTER STRUCTURE AND EMULSION PROPERTIES

Chemometric procedures were applied to water-in-oil-silicon (W/O-S) emulsions, used in cosmetic field. The optimization.performed by the strategy of Experimental Design and Response Surface method, led to an emulsion of very high stability. Quantitative relationships between two properties of emulsions)stability and viscosity) and chemical structure of 15 esters, employed as oil, were studied. By Partial Least Squares (PLS) method, properties and structure of acids and alcohols, from wich the esters derived, could be used to model the properties of the emulsion.