SURFACE ACTIVE PROPERTIES AND CLEANING EFFICACY OF MATERIALS DERIVED FROM LACTITOL

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Abstract
Six lactitol esters were produced by direct esterification of lactitol and propoxylated lactitol with long chain fatty acids: lactitol palmitate, lactitol stearate, an ester of lactitol and a 50:50 mixture of the aforementioned fatty acids (lactitol palmitate/stearate) as well as the three esters formed by reaction of propoxylated lactitol with the aforementioned fatty acids (propoxylated lactitol palmitate, propoxylated lactitol stearate and propoxylated lactitol palmitrate/stearate). These products were tested for surface activity as reflected in such properties as surface tension, lime soap dispersion, detergency, and emulsification power. All esters exhibited substantial surface activity. They proved to be effective lime soap dispersing agents and detergents for cotton fabrics. The propoxylated lactitol esters showed lime soap dispersion and detergency properties superior to those of the conventional lactitol esters. The stability of emulsions formed with all these products exceeded that of the sorbitan monolaurate, a commercially available emulsifer and stabilizer.

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