Reference : Surface activity of a fluorinated carbohydrate ester in water/carbon dioxide emulsions
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/129678
Surface activity of a fluorinated carbohydrate ester in water/carbon dioxide emulsions
English
Favrelle, Audrey [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Boyère, Cédric [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Tran, Kien My [IBS Institut de Biologie en Santé, Angers, France > > Micro-Nanomédecines Biomimétiques > >]
Alaimo, David [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
Calvignac, Brice [IBS Institut de Biologie en Santé, Angers, France > > Micro-Nanomédecines Biomimétiques > >]
Paquot, Michel mailto [University of Liège (ULg) > Gembloux Agro-Bio Tech > Unit of Biological and Industrial Chemistry > >]
Boury, Frank [IBS Institut de Biologie en Santé, Angers, France > > Micro-Nanomédecines Biomimétiques > >]
Jérôme, Christine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Debuigne, Antoine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
15-May-2013
Journal of Colloid & Interface Science
Academic Press
398
273-275
Yes (verified by ORBi)
International
0021-9797
1095-7103
Orlando
FL
[en] supercritical carbon dioxide
[en] The water/carbon dioxide (W/CO2) interfacial activity and emulsifying capacity of hydrocarbon and fluorinated carbohydrate esters are investigated of the first time and compared to the performance of sodium-bis(2-ethylhexyl)sulfosuccinate (AOT). The reduction of the W/CO2 interfacial tension was measured using a pendant drop tensiometer equipped with a cell view pressurized with CO2 at 80 bar and 45 °C. It was found that the interface stabilization improved in the order AOT < 6-O-myristoyl mannose < 6-O-(2H,2H,3H,3H-perfluoroundecanoyl)-D-mannose. In the latter case, a drastic reduction of the W/CO2 interfacial tension was observed (85% reduction, interfacial tension at the equilibrium = 3.6 mN/m), which emphasizes the advantage of using a fluorinated CO2-philic tail and the potential of sugars as hydrophilic head. The formulation of stable W/CO2 emulsions was also achieved using the fluorinated mannose derivative. This study paves the way to the design of a novel class of competitive surface active agents for W/CO2 emulsions.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/129678
10.1016/j.jcis.2013.02.023

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