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Self‐Assembly in Water of Poly(acrylic acid)‐Based Diblock Copolymers Synthesized by Nitroxide‐Mediated Polymerization

2004; Wiley; Volume: 25; Issue: 21 Linguagem: Inglês

10.1002/marc.200400315

1521-3927

Gaël Laruelle, Jeanne François, Laurent Billon,

Polymer Surface Interaction Studies

Abstract Summary: Amphiphilic diblock copolymers consisting of a hydrophilic block, poly(acrylic acid), and a hydrophobic block, polystyrene, were synthesized by direct nitroxide‐mediated polymerization using the PS block as a macro‐initiator for the first time. Several techniques were used to characterize the amphiphilic block copolymers (size exclusion chromatography, NMR spectroscopy). The proposed method can lead to samples with a broad range of composition and molar mass. Preliminary studies of their self‐assembly in aqueous medium using fluorescence spectroscopy and small‐angle neutron scattering are presented. Schematic of the formation of the PS‐ b ‐PAA block copolymers and their micellization in aqueous media. image Schematic of the formation of the PS‐ b ‐PAA block copolymers and their micellization in aqueous media.