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Preparation of core‐shell polystyrene‐polyimide particles by dispersion polymerization of styrene using poly(amic acid) as a stabilizer
Author(s) -
Watanabe Shinji,
Ueno Kenji,
Kudoh Kazuhiko,
Murata Miki,
Masuda Yuzuru
Publication year - 2000
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 - 10.1002/1521-3927(20001201)21:18<1323::aid-marc1323>3.0.co;2-x
Subject(s) - dispersion polymerization , dispersity , polymer chemistry , polystyrene , styrene , dispersion (optics) , materials science , stabilizer (aeronautics) , polymerization , chemical engineering , polyimide , acetic anhydride , chemistry , copolymer , organic chemistry , polymer , composite material , catalysis , layer (electronics) , mechanical engineering , physics , optics , engineering
Dispersion polymerization of styrene (S) and vinylbenzyltrimethylammonium chloride (VBA) was conducted in an ethanol‐water medium using an aromatic poly(amic acid) (PAA) as the stabilizer. When equimolar amounts of VBA and the carboxylic acid of PAA were used, monodisperse particles with high PAA content were obtained quantitatively. The imidization of PAA on the particles proceeded with acetic anhydride and N,N ‐dimethylaminopyridine to form core‐shell PS‐polyimide particles.