%0 Journal Article %A Wellert, S. %A Karg, M. %A Holderer, O. %A Richardt, A. %A Hellweg, T. %T Temperature dependence of the surfactant film bending elasticity in a bicontinuous sugar surfactant based microemulsion: a quasielastic scattering study %J Physical Chemistry Chemical Physics %V 13 %@ 1463-9076 %C Cambridge %I RSC Publ. %M PreJuSER-14249 %P 3092 - 3099 %D 2011 %Z Record converted from VDB: 12.11.2012 %X Currently, the design of microemulsions is focussed on the formulation of environmentally compatible systems formed by non-harmful amphiphiles and oils. The use of sugar-based surfactants allows the design of microemulsions where, instead of the temperature, the addition of short- or medium-chain alcohols tunes the curvature of the amphiphilic interface. In this work, the resulting temperature stability of a sugar surfactant and rapeseed methyl ester based bicontinuous microemulsion is exploited to study the influence of temperature variations on the bending elastic constant κ. Quasi-elastic scattering of light and neutrons is used to separate long-range collective motions and local thermally excited undulations of the interface. κ in units of kT is found to be independent of temperature over a wide range. %K Carbohydrates: chemistry %K Elasticity %K Emulsions: chemistry %K Light %K Scattering, Radiation %K Scattering, Small Angle %K Surface-Active Agents: chemistry %K Temperature %K X-Ray Diffraction %K Carbohydrates (NLM Chemicals) %K Emulsions (NLM Chemicals) %K Surface-Active Agents (NLM Chemicals) %K J (WoSType) %F PUB:(DE-HGF)16 %9 Journal Article %$ pmid:21152562 %U <Go to ISI:>//WOS:000287041700012 %R 10.1039/c0cp02044c %U https://juser.fz-juelich.de/record/14249