ORBi: Vangeyte Patrick - Concomitant adsorption of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers and sodium dodecyl sulfate at the silica-water interface

Reference : Concomitant adsorption of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers a...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/6150

Title :	Concomitant adsorption of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers and sodium dodecyl sulfate at the silica-water interface
Language :	English
Author, co-author :	Vangeyte, Patrick [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Leyh, Bernard [University of Liège (ULg) > Department of Chemistry > Laboratoire de dynamique moléculaire > >]
	De Clercq, C. [University of Liège (ULg) > Department of Chemistry > Laboratoire de Dynamique Moléculaire > >]
	Auvray, Loïc [Laboratoire Léon Brillouin (Saclay) and University of Evry, France > > Laboratoire des Matériaux Polymères aux Interfaces (Evry) > >]
	Misselyn-Bauduin, Anne-Marie [Université catholique de Louvain (UCL) > > > >]
	Jérôme, Robert [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Publication date :	16-Aug-2005
Journal title :	Langmuir
Publisher :	Amer Chemical Soc
Volume :	21
Issue/season :	17
Pages :	7710-7716
Audience :	International
ISSN :	0743-7463
City :	Washington
Abstract :	[en] Upon addition of silica to aqueous solutions of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers (PEO-b-PCL) and sodium dodecyl sulfate (SDS), adsorption of the solutes occurs at the silica-water interface. The amount of the adsorbed constituents has been measured by the total concentration depletion method. Small-angle neutron scattering experiments (SANS) have been carried out to investigate the structure of the adsorbed layer. Although SDS is not spontaneously adsorbed onto hydrophilic silica, adsorption is observed in the presence of PEO-b-PCL diblocks, in relation to the relative concentration of the two compounds. Conversely, SDS has a depressive effect on the adsorption of the copolymer, whose structure at the interface is modified. Copolymer desorption is however never complete at high SDS content. These observations have been rationalized by the associative behavior of PEO-b-PCL and SDS in water.
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; The European Community-Access to Research Infrastructures Action of the Improving Human Potential Program (HPRI)
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/6150
DOI :	10.1021/la047051k
Other URL :	http://pubs.acs.org/doi/pdf/10.1021/la047051k

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