Abstract
The amphiphilic cationic polymer, poly(acryloyloxyethyl dimethylbenzyl ammonium chloride) (PAODBAC), has been studied as an additive for the stabilization of water-in-oil inverse emulsions prepared from mixed surfactants. The interaction behavior of PAODBAC with the surfactants, the effect of the PAODBAC concentration on the stability of the inverse emulsion obtained after polymerization, the characteristics of the polymer particle after polymerization, and the rheological properties with different concentrations of PAODBAC have been systematically investigated. A mechanism is proposed to account for the stabilizing effect of PAODBAC on the inverse emulsion system. The PAODBAC chains can interact with the surfactant molecules. When the concentration of PAODBAC was 0.067% (w/w), the interactions between the polymer chains and surfactant molecules were optimized, resulting in the best stability of the inverse emulsion. The presence of PAODBAC in the inverse emulsion system aided the establishment of a small mean polymer particle size distribution.
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