Interferometric investigation of the gas-state monolayer of monorhamnolipid adsorbing at an oil/water interface.

[en] We present a study on biosurfactant uptake at the interface of a millimeter-sized drop of squalene in water, by a recently developed differential interferometric technique. The technique allows detecting capillary waves, with amplitudes of the order of 10-9 m, excited on the surface of the drop by an electric field in the order of 5V/cm. By studying the resonant surface modes of the drop it is possible to assess the interfacial properties as a function of the surfactant concentration in the water bulk. The technique allows to follow the adsorption process at extremely low surfactant concentration, not accessible by other methods, investigating the gas state in the π-A diagrams of 2D amphiphilic monolayers.

Disciplines :

Physics

Author, co-author :

Brocca, Paola

Rondelli, Valeria

Corti, M

Del Favero, E

Deleu, Magali ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes

Cantu, Laura

Language :

English

Title :

Interferometric investigation of the gas-state monolayer of monorhamnolipid adsorbing at an oil/water interface.

Publication date :

2018

Journal title :

Journal of Molecular Liquids

ISSN :

0167-7322

eISSN :

1873-3166

Publisher :

Elsevier, Netherlands

Volume :

266

Pages :

687-691

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 12 July 2018

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