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Formation of Core‐Shell‐Corona Micellar Complexes through Adsorption of Double Hydrophilic Diblock Copolymers into Core‐Shell Micelles
Author(s) -
Zhang Wangqing,
Shi Linqi,
Gao Lichao,
An Yingli,
Wu Kai
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.200500281
Subject(s) - micelle , ethylene glycol , copolymer , shell (structure) , chemical engineering , materials science , polymer chemistry , acrylic acid , polystyrene , chemistry , organic chemistry , composite material , aqueous solution , polymer , engineering
Summary: The complexation between polystyrene‐ block ‐poly(acrylic acid) (PS‐ b ‐PAA) micelles and poly(ethylene glycol)‐ block ‐poly(4‐vinyl pyridine) (PEG‐ b ‐P4VP) is studied, and a facile strategy is proposed to prepare core‐shell‐corona micellar complexes. Micellization of PS‐ b ‐PAA in ethanol forms spherical core‐shell micelles with PS block as core and PAA block as shell. When PEG‐ b ‐P4VP is added into the core‐shell micellar solution, the P4VP block is absorbed into the core‐shell micelles to form spherical core‐shell‐corona micellar complexes with the PS block as core, the combined PAA/P4VP blocks as shell and the PEG block as corona. A model is suggested to characterize the core‐shell‐corona micellar complexes.Schematic formation of core‐shell‐corona (CSC) micellar complexes by adsorption of PEG‐ b ‐P4VP into core‐shell PS‐ b ‐PAA micelles.