The microemuision behavior in the quaternary system alkyl polyglucoside(C_8G_(1.46), C_(10)G_(1.54))/1-butanol/cyclohexane/water has been studied at 40℃ with the alcoholconcentration scanning and the fishlike phase d...The microemuision behavior in the quaternary system alkyl polyglucoside(C_8G_(1.46), C_(10)G_(1.54))/1-butanol/cyclohexane/water has been studied at 40℃ with the alcoholconcentration scanning and the fishlike phase diagram methods. Increasing δ at a constant γ causesa phase inversion from an oil-in-water microemuision in contact with excess oil (Winsor Ⅰ or 2 )to a water-in-oil microemuision in contact with excess water (Winsor Ⅱ or 2) via a middle-phasemicroemuision in contact with excess oil and water (Winsor Ⅲ or 3). By using the simple massbalance equation and the HLB plane equation, the mass fraction of 1-butanol in the interfaciallayer, S_2~s, the monomeric solubilities of APG and 1-butanol, S_1 and S_2, in the oil phase, andthe mass fractions of APG and 1-butanol in the interfacial layer (C_1 and C_2) have been calculated,respectively. The effects of different alcohols, aqueous media arid oils on the phase behavior andthe composition of the interfacial layer are also investigated. It is found that the alcohols withlonger hydrocarbon chain, oil molecules with smaller molecular volume and the addition of inorganicsalt can increase the solubilization of the microemulsions .展开更多
基金This work was supported by the National Natural Science Foundation of China (Grant Nos. 29973023 and 29903006). References
文摘The microemuision behavior in the quaternary system alkyl polyglucoside(C_8G_(1.46), C_(10)G_(1.54))/1-butanol/cyclohexane/water has been studied at 40℃ with the alcoholconcentration scanning and the fishlike phase diagram methods. Increasing δ at a constant γ causesa phase inversion from an oil-in-water microemuision in contact with excess oil (Winsor Ⅰ or 2 )to a water-in-oil microemuision in contact with excess water (Winsor Ⅱ or 2) via a middle-phasemicroemuision in contact with excess oil and water (Winsor Ⅲ or 3). By using the simple massbalance equation and the HLB plane equation, the mass fraction of 1-butanol in the interfaciallayer, S_2~s, the monomeric solubilities of APG and 1-butanol, S_1 and S_2, in the oil phase, andthe mass fractions of APG and 1-butanol in the interfacial layer (C_1 and C_2) have been calculated,respectively. The effects of different alcohols, aqueous media arid oils on the phase behavior andthe composition of the interfacial layer are also investigated. It is found that the alcohols withlonger hydrocarbon chain, oil molecules with smaller molecular volume and the addition of inorganicsalt can increase the solubilization of the microemulsions .
