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《China Surfactant Detergent & Cosmetics》 2008-01
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Study of pseudo-ternary phase diagram and electric conductivity of microemulsion rolling oil

YUAN Kai,CAO Dong,XU Jing-yu(Food Science and Technology,Jiangnan University,Wuxi 214122,China)  
Taking multi-component surfactant blend system as the object,a series of pseudo-ternary phase diagram of system composed of surfactant,n-butanol,mineral oil and water were studied.Structure of the microemulsion was identified by means of electric conductivity.Results showed that,difference for the blend ratio of the surfactants has very big impact on the behavior of the pseudo-ternary phase diagram.As the ratio Span80-PEG400 increases,the area of the microemulsion region increases firstly and then decreases.The area of liquid crystalline region decreases gradually and up to diminishing.The way of phase transition changes from discontinuous way(liquid crystalline) to dual-continuous way.Following the decline of the content of surfactant,a big area of emulsion region appears.The change of electric conductivity agrees with the change of phase behavior.
【CateGory Index】: TE626.3
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