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Non‐Fluorous Random Copolymeric Stabilizers for Dispersion Polymerizations of MMA in Supercritical CO 2
Author(s) -
Hwang Ha Soo,
Lim Kwon Taek
Publication year - 2006
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.200600071
Subject(s) - dispersion polymerization , copolymer , materials science , supercritical fluid , polymer chemistry , stabilizer (aeronautics) , methacrylate , methyl methacrylate , dispersion (optics) , chemical engineering , polymerization , styrene , polymer , composite material , chemistry , organic chemistry , mechanical engineering , physics , optics , engineering
Summary: The dispersion polymerization of MMA in supercritical CO 2 was successfully carried out utilizing the first non‐fluorous random copolymers composed of 3‐tris(trimethoxysilyl)propyl methacrylate and 2‐dimethylaminoethyl methacrylate, poly(SiMA‐ co ‐DMAEMA) as a stabilizer. The resulting high yield (>93%) of micron‐sized PMMA was formed in the presence of 5% (w/w to MMA) of copolymeric stabilizers. While the PSiMA and PDMAEMA homopolymer produced nondescript solid and irregular shape aggregate, respectively, the random copolymer of 71% SiMA‐content resulted in spherical and uniform powder.SEM image of PMMA particles prepared in supercritical CO 2 using poly(SiMA‐ co ‐DMAEMA) (71:29) stabilizer.