Article (Scientific journals)
Surface activity of a fluorinated carbohydrate ester in water/carbon dioxide emulsions
Favrelle, Audrey; Boyère, Cédric; Tran, Kien My et al.
2013In Journal of Colloid and Interface Science, 398, p. 273-275
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Keywords :
supercritical carbon dioxide
Abstract :
[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.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Favrelle, Audrey;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Boyère, Cédric ;  Université de Liège - ULiège > 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 - ULiège > 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 ;  Université de Liège - ULiège > 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  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Debuigne, Antoine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Surface activity of a fluorinated carbohydrate ester in water/carbon dioxide emulsions
Publication date :
15 May 2013
Journal title :
Journal of Colloid and Interface Science
ISSN :
0021-9797
eISSN :
1095-7103
Publisher :
Academic Press, Orlando, United States - Florida
Volume :
398
Pages :
273-275
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 29 August 2012

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