Monodisperse Particles Based on Copolymers of Methyl methacrylate or Styrene with N-Vinylformamide

Sammary: Various techniques of one-step batch emulsion copolymerization of methyl methacrylate (MMA) or styrene (St) with N-vinylformamide (NVF) initiated by 2,2'-azobis(2-methylpropanamidine) (AIBA) or 2,2'-azobis[4,5-dihydroimidazol-2-yl] (AIP) dihydrochlorides in the presence of dextran...

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Bibliographic Details
Published in:Macromolecular symposia. 2009-07, Vol.281 (1), p.61-68
Main Authors: Menshikova, Anastasia, Evseeva, Tatiana, Shevchenko, Natalya, Shabsels, Boris, Yakimansky, Alexander, Ivanchev, Sergey
Format: Article
Language:English
Subjects:
amphiphilic surface
emulsion copolymerization
monodisperse particles
N-vinylformamide
self-assembly
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Summary:Sammary: Various techniques of one-step batch emulsion copolymerization of methyl methacrylate (MMA) or styrene (St) with N-vinylformamide (NVF) initiated by 2,2'-azobis(2-methylpropanamidine) (AIBA) or 2,2'-azobis[4,5-dihydroimidazol-2-yl] (AIP) dihydrochlorides in the presence of dextran, cetyltrimethylammonium bromide (CTAB) or without any stabilizers were examined to obtain monodisperse submicron and nano- particles, having both positive surface charge and hydrophilic surface. After hydrolysis in acidic media, the particle surface contained amino groups originating from NVF units along with carboxylic groups from hydrolyzed initiator residues. The obtained particles were tested as building blocks of hierarchic structures. Owing to their amphiphilic surface, the particles were capable of self-assembling from their dispersions into three-dimentional (3D) ordered arrays.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.200950708