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Mixing Behaviors and Application of Anionic-Cationic Surfactants

ZOU Li hong FANG Yun LU Shuan suo (Wuxi University of Light Industry, Wuxi 214036, China)  
The synergism effects of the mixed systems of anionic-cationic surfactants on the effectiveness and efficiency of surface tension reduction, the effectivenessof cmc reduction as well as increment in sruface adsorption were reviewed. This synergism effects can be applied in enhancement of detergency, solubilization, foaming, wetting and emulsifying. In order to get optimum applying performance, econimic benefits and improving compatibility, many methods can be adopted, such as mixing in unequal-molar ratio, introducing polyethyleneoxide chains in ionic surfactants, blending with nonionic or amphoteric surfactants. It is possible to apply mixing systems of anionic-cationic surfactants in detergents by adjusting formulation schedule, that is, preencapsule cationic surfactants with inorganic ingredients, water-soluble organic polymers or nonionic surfactants.
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