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Microwave‐Assisted Free Radical Copolymerizations of Styrene and Methyl Methacrylate
Author(s) -
Stange Heiner,
Greiner Andreas
Publication year - 2007
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.200600841
Subject(s) - styrene , methyl methacrylate , toluene , copolymer , peroxide , monomer , polymer chemistry , radical , solvent , radical initiator , polymerization , microwave , materials science , radical polymerization , photochemistry , chemistry , polymer , organic chemistry , physics , quantum mechanics
Free radical copolymerizations of styrene and MMA were performed in toluene and DMF as solvents using different peroxide initiators with and without microwave irradiation. A general trend showed significant solvent dependence of monomer conversion rate only for copolymerizations initiated by tert ‐butyl perbenzoate in DMF compared to toluene but nearly no impact for copolymerizations initiated by dicumyl peroxide and dibenzoyl peroxide. Significant variations in copolymer composition were not observed for reactions under conventional heating compared to microwave irradiation. It was concluded that enhanced initiator decomposition under microwave irradiation in DMF accelerate polymerization of styrene and MMA by formation of larger amount of initiator radicals.