USING LIPOSOMES IN WOOL CHLORINATION - STABILITY OF CHLORINE LIPOSOMES AND THEIR APPLICATION ON WOOL FIBERS

We have investigated the use of liposomes as vehicles for oxidative reagents in chlorination of wool fibers. For this purpose, we first studied the interaction between phospholipidic vesicles and chlorine to determine the physicochemical stabilty of liposomes containing this oxidative agent. Our study of chemical stability was based first on the lipidic peroxidation index of liposomes and second on the alteration of fatty acids that make up of the liposomic structures containing different active chlorine concentrations at pH value of 7.0. Likewise, we studied the physical stability of liposomes through changes in the absorbance of the vesicle suspensions, which are directly related to the aggregation or solubilization of liposomes, and also by measurements of mean particle size distribution. Regarding the oxidative effects promoted by chlorine treatments on wool applied directly or via liposomes at pH 1.5, we investigated the extent of cysteic acid formation groups in wool fibers.