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KMID : 0604520070330010007
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Journal of the Society of Cosmetic Scientists of Korea
2007 Volume.33 No. 1 p.7 ~ p.10
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Gel Type Formulation Utilizing Polymer-Surfactant Interaction
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Kim Dong-Joo
Kang Tae-Joon
Lee Cheon-Koo
Lee Jung-No
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Abstract
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The interaction between polymers and surfactants was investigated by means of rheological and surface tension measurements. The polymers used in this study were acrylates/ alkyl acrylate crosspolymer (AC) and ammonium acryloyldimethyltaurate/VP copolymer (AV). And the surfactants were PEG-40 hydrogenated castor oil (HC) and polysorbate 60 (P60). HC and P60 made the micelles intervening between AC polymers, resulting in the increase of viscosity. However, HC showed a similar behavior over the wider range of surfactant concentration than P60. Regarding of surface tensions in the same range of surfactant concentration, AC/HC solution showed the area of increasing surface tension with surfactant concentration in contrast to the AC/P60 solution showing no increasing area. It is assumed that the micelles between AC/HC were formed so cooperatively and strongly that the surfactants located at the surface originally moved to the micelles.
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KEYWORD
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polymer-surfactant interaction, acrylates/ alkyl acrylate crosspolymer, ammonium acryloyldimethyltaurate/VP copolymer, surface tension, rheological
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