Structure of biodiesel based bicontinuous microemulsions for environmentally compatible decontamination: A small angle neutron scattering and freeze fracture electron microscopy study

Wellert, Stefan; Karg, Matthias; Imhof, Henrik; Steppin, A.; Altmann, Hans-Juergen; Dolle, Michael; Richardt, André; Tiersch, Brigitte; Koetz, Joachim; Lapp, Alain; Hellweg, Thomas

doi:10.1016/j.jcis.2008.05.062

Cited by 30 publications

(19 citation statements)

References 68 publications

(93 reference statements)

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“…Several technologies are available for biodiesel production such as microemulsion [2], direct use and blending of diesel/oil [3], thermal cracking (pyrolysis) [4], and transesterification (alcoholysis) [5]. Among them, the most popularly used method is transesterification in the presence of a catalyst (e.g., liquid acids or bases, enzymes, or solid catalysts).…”

Section: Introductionmentioning

confidence: 99%

Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents

Ong

Effendi

Kurniawan

et al. 2013

Energy

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Section: Introductionmentioning

confidence: 99%

Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents

Ong

Effendi

Kurniawan

et al. 2013

Energy

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“…The biodiesel used in the experiments was produced in accordance with the European standard EN 14214 and consists of a mixture of saturated and unsaturated fatty acid methyl esters, CH 3 -OOC-R. R represents the fatty acid component with a chain length distribution from C 16 to C 24 and with 80-90% the C 18 is the main component in this mixture. 30 D 2 O was received from Eurisotop (France) (isotopic purity Z 99%). Further information about the components, particularly about the RME can be found in the literature.…”

Section: Methodsmentioning

confidence: 99%

“…Further information about the components, particularly about the RME can be found in the literature. 30 …”

Section: Methodsmentioning

confidence: 99%

“…From previous SANS measurements and a Teubner-Strey analysis of these data a mean domain size d of 130 Å and a correlation lengths of 44-47 Å were obtained. 30 A stock solution was prepared by weighing in and stirring appropriate amounts of each component. The scattering experiments at Table 1 Temperature dependence of density, kinematic and dynamic viscosity of RME.…”

Section: Determination Of Sample Viscositymentioning

confidence: 99%

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Temperature dependence of the surfactant film bending elasticity in a bicontinuous sugar surfactant based microemulsion: a quasielastic scattering study

Wellert

Karg

Holderer

et al. 2011

Phys. Chem. Chem. Phys.

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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 k. Quasi-elastic scattering of light and neutrons is used to separate long-range collective motions and local thermally excited undulations of the interface. k in units of kT is found to be independent of temperature over a wide range.

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“…This holds e.g. for tertiary oil recovery or for decontamination [151,152]. Early neutron work addressing this issue goes back to Chen, Strey and Lee [153].…”

Section: Microemulsions Close To Interfacesmentioning

confidence: 99%

Structure, interfacial film properties, and thermal fluctuations of microemulsions as seen by scattering experiments

Oberdisse¹,

Hellweg²

2017

Advances in Colloid and Interface Science

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The physics of microemulsions and in particular Dominique Langevin's contributions to the understanding of microemulsion structure and bending properties using scattering techniques are reviewed. Among the many methods used by her and her co-workers, we particularly emphasize optical techniques and small angle neutron scattering (SANS), but also neutron spin echo spectroscopy (NSE). The review is then extended to more recent studies of properties of microemulsions close to surfaces, using reflectometry and grazing-incidence small angle neutron scattering (GISANS).

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Structure of biodiesel based bicontinuous microemulsions for environmentally compatible decontamination: A small angle neutron scattering and freeze fracture electron microscopy study

Cited by 30 publications

References 68 publications

Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents

Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents

Temperature dependence of the surfactant film bending elasticity in a bicontinuous sugar surfactant based microemulsion: a quasielastic scattering study

Structure, interfacial film properties, and thermal fluctuations of microemulsions as seen by scattering experiments

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