Reference : Self-assembling of poly(-caprolactone)-b-poly(ethylene oxide) diblock copolymers in a...
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http://hdl.handle.net/2268/9327
Self-assembling of poly(-caprolactone)-b-poly(ethylene oxide) diblock copolymers in aqueous solution and at the silica–water interface
English
Leyh, Bernard mailto [Université de Liège - ULiège > Department of Chemistry > Laboratoire de dynamique moléculaire > >]
Vangeyte, Patrick [Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Heinrich, M. [Institut für Festköperforschung, Forschungszentrum Jülich, Germany > > > >]
Auvray, L. [Laboratoire Léon Brillouin (CEA-CNRS), CEN-Saclay, Gif-sur-Yvette, France > > > >]
De Clercq, C. [Université de Liège - ULiège > Department of Chemistry > Laboratoire de dynamique moléculaire > >]
Jérôme, Robert [Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
2004
Physica B. Condensed Matter
Elsevier
350
1-3, suppl. 1
E901-E904
Yes (verified by ORBi)
International
0921-4526
Third European Conference on Neutron Scattering
03/09/2009 - 06/09/2003
Mutka H
Montpellier
France
[en] self-assembly in solution ; micelle ; small-angle neutron scattering ; self-assembly at interface
[en] Small-angle neutron scattering is used to investigate the self-assembling behaviour of poly( ε-caprolactone)-b-poly(ethylene oxide) diblock copolymers with various block lengths (i) in aqueous solution, (ii) in aqueous solution with the addition of sodium dodecyl sulphate (SDS) and (iii) at the silica-water interface. Micelles are observed under our experimental conditions due to the very small critical micellar concentration of these copolymers (0.01 g/l). The poly( ε-caprolactone) core is surrounded by a poly(ethylene oxide) corona. The micellar form factors have been measured at low copolymer concentrations (0.2 wt%) under selected contrast matching conditions. The data have been fitted to various analytical models to extract the micellar core and corona sizes. SDS is shown to induce partial micelle disruption together with an increase of the poly(ethylene oxide) corona extension from 25% (without SDS) to 70% (with SDS) of a completely extended PEOi u chain. Our data at the silica-water interface are compatible with the adsorption of micelles.
Center for Education and Research on Macromolecules (CERM)
The European Commission through the programmes ‘‘Jüich Neutrons for Europe’’ and HPRI-CT-1999-00032 (access to the Orphée-LLB facility)
Researchers
http://hdl.handle.net/2268/9327
10.1016/j.physb.2004.03.233
http://www.elsevier.com/wps/find/journaldescription.cws_home/505712/description#description
http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TVH-4CC3210-8-8&_cdi=5535&_user=532038&_orig=search&_coverDate=07%2F15%2F2004&_sk=996499998.8998&view=c&wchp=dGLbVlb-zSkWA&md5=bdb88ec2f162b2917508664385fc7738&ie=/sdarticle.pdf
The authors acknowledge Physica B-Condensed Matter (Elsevier) for allowing them to archive this paper.

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