ORBi: Vangeyte Patrick - Mixed self-assembly of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers and sodium dodecyl sulfate in aqueous solution

Reference : Mixed self-assembly of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers and ...


	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/2268/8051

Title :	Mixed self-assembly of poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers and sodium dodecyl sulfate in aqueous solution
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 > >]
	Auvray, L. [Laboratoire Léon Brillouin (CEA-CNRS) (Saclay, Gif sur Yvette) and University of Evry , France > > Laboratoire des Matériaux Polymères aux Interfaces (Evry) > >]
	Grandjean, Jean [University of Liège (ULg) > Department of Chemistry > Chimie Organique et Spectroscopie Multinucléaire (COSM) > >]
	Misselyn-Bauduin, Anne-Marie [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jérôme, Robert [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Publication date :	12-Oct-2004
Journal title :	Langmuir
Publisher :	Amer Chemical Soc
Volume :	20
Issue/season :	21
Pages :	9019-9028
Audience :	International
ISSN :	0743-7463
City :	Washington
Keywords :	[en] self-assembly in solution ; micelle
Abstract :	[en] Interaction of amphiphilic poly(ethylene oxide)-b-poly(epsilon-caprolactone) copolymers with anionic sodium dodecyl sulfate (SDS) has been investigated in aqueous solution. Formation of mixed micelles has been confirmed by surface tension measurements, whereas the influence of the surfactant on the copolymer self-assembling has been studied by measurement of the 1H NMR self-diffusion coefficients and by small-angle neutron scattering. As a rule, the surfactant decreases the heterogeneity of the micellar structures formed by the copolymer in water. Moreover, increasing the content of SDS results in the increasingly more important extension of the poly(ethylene oxide) (PEO) corona chains and the copolymer micelle deaggregation. The stability of the micelles against SDS increases with the length of the hydrophobic block. Preliminary two-dimensional NMR measurements with nuclear Overhauser enhancement have confirmed the spatial vicinity between SDS and the constitutive blocks of the copolymer.
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA ; The European Community
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/8051
DOI :	10.1021/la048848e
Other URL :	http://pubs.acs.org/doi/pdf/10.1021/la048848e

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