Reference : pH Dependence of the morphology of aqueous micelles formed by polystyrene-block-poly(2-v...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/11523
pH Dependence of the morphology of aqueous micelles formed by polystyrene-block-poly(2-vinylpyridine)-block-poly(ethylene oxide) copolymers
English
Gohy, Jean-François [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Willet, Nicolas mailto [university of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Varshney, Sunil K [Polymer Source, Dorval, Canada > > > >]
Zhang, Jian-Xin [Polymer Source, Dorval, Canada > > > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
13-Aug-2002
e-Polymers
European Polymer Federation
35
1-10
Yes (verified by ORBi)
International
1618-7229
Strasbourg
[en] self-assembly in solution ; micelle ; stimuli responsive micelle
[en] The morphology of micelles formed by two polystyrene-block-poly(2-vinylpyridine)- block-poly(ethylene oxide) (PS-b-P2VP-b-PEO) copolymers was studied in water by dynamic light scattering and transmission electron microscopy. Spherical micelles were observed that consist of a PS core, a P2VP shell and a PEO corona. The characteristic size of core, shell and corona depends on the copolymer composition. An important increase in micellar size occurs at pH < 5 as a result of P2VP block protonation. The reversibility of this pH effect depends on copolymer composition, too. The conformation of the PEO block plays an important role in this pH driven morphological transition.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The European Science Foundation (ESF) in the frame of the SUPERNET program ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/11523
http://www.e-polymers.org/journal/list.cfm#

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