Self-assembly behaviour of alkylpolyglucosides (APG) in mixed surfactant-stabilized emulsions system,10.1016/j.molliq.2010.11.015,Journal of Molecular

Self-assembly behaviour of alkylpolyglucosides (APG) in mixed surfactant-stabilized emulsions system (Citations: 1)


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The self-assembly behaviour of two alkyl polyglucosides (APG) surfactants; octyl/decyl polyglucosides (SAPG) and dodecyl/tetradecyl/hexadecyl polyglucosides (LAPG) in aqueous solution was studied. Critical micelle concentrations (CMC) of the surfactants were determined to predict onset point of surfactants self-assembly. The surfactants were prepared at concentrations 5×10−3, 5×10−2 and 5% (w/w). Transmission electron microscopy (TEM) study showed that the surfactants with spherical-like structure self-assembled to simple rod-like, and then to aggregated rod-like structures with increasing concentration. The results showed that LAPG exhibited larger aggregate than SAPG. The distinctive evolution of self-assembly structures was observed when ethoxylated 3-(3-hydroxypropyl)-heptamethyltrisiloxane (organosilicone) was incorporated into the APG system at 5% (w/w) surfactant concentration. At mixed surfactant ratio (APG:organosilicone) of 9:1, TEM study showed that SAPG:organosilicone has multilamellar vesicles and LAPG:organosilicone has transient worm-like network. These mixed surfactants imparted difference in rheological behaviour, Newtonian and non-Newtonian, respectively, when they were developed into a microemulsion system of fatty acid methyl esters (FAMEs)/mixed surfactant/water. The dilution of the microemulsions with gentle stirring created a different geometry of nano-emulsions with oval and navette shapes for SAPG and LAPG, respectively.

Journal: Journal of Molecular Liquids - J MOL LIQ , vol. 158, no. 3, pp. 175-181, 2011

DOI: 10.1016/j.molliq.2010.11.015

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Self-assembly behaviour of alkylpolyglucosides (APG) in mixed surfactant-stabilized emulsions system,10.1016/j.molliq.2010.11.015,Journal of Molecular

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