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Micelles Formed by Cylindrical Brush‐Coil Block Copolymers
Author(s) -
Khelfallah Nawel,
Gunari Nikhil,
Fischer Karl,
Gkogkas Giorgos,
Hadjichristidis Nikos,
Schmidt Manfred
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500512
Subject(s) - copolymer , brush , micelle , materials science , polystyrene , polymer chemistry , amphiphile , polymer brush , acrylic acid , electromagnetic coil , polymer , aqueous solution , composite material , chemistry , polymerization , physics , organic chemistry , quantum mechanics
Summary: Amphiphilic cylindrical brush‐coil block copolymers consisting of a polystyrene coil and a cylindrical brush block with poly(acrylic acid) side chains are prepared by ATRP of t ‐butylacrylate from a block comacroinitiator. Upon acidolysis of the poly( t ‐butylacrylate), water‐soluble polymers were obtained that were observed to form micelles consisting of 4–5 block copolymers on average in aqueous solution. The star‐like nature of such micelles was clearly visualized by scanning force microscopy.Schematic of coil‐cylindrical brush block copolymer PS‐ b ‐(P i BEMA‐ g ‐PAA), its AFM image clearly showing the main chain and the PAA corona of the cylindrical brush block.