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Free Radical Copolymerization of Methyl methacrylate and N ‐Phenyl maleimide in 1‐Butyl‐3‐methylimidazolium tetrafluoroborate
Author(s) -
Woecht I.,
SchmidtNaake G.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950124
Subject(s) - copolymer , maleimide , polymer chemistry , tetrafluoroborate , ionic liquid , methyl methacrylate , monomer , butyl acrylate , glass transition , solvent , chemistry , methyl acrylate , radical polymerization , materials science , organic chemistry , polymer , catalysis
We investigated the free radical copolymerization of methyl meth‐acrylate (MMA) and N ‐phenyl maleimide (NPI) in 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([BMIM]BF 4 ). Dimethyl formamide (DMF) was used as reference solvent. The influence of the ionic liquid (IL) on the polymerization rate r p , the molecular weights M n , the copolymer composition, the glass‐transition temperature and the rheological behavior of the copolymers was studied. In [BMIM]BF 4 r p strongly decreases with increasing initial concentration of NPI and becomes even lower than in DMF for 70 to 90 mol% NPI in the monomer feed. In addition, M n of the copolymers produced in the IL strongly decreases with increasing NPI content, but is always higher than in DMF.