Premium
Mechanism of the electrocopolymerization of styrene and N ‐(3‐carboxyphenyl)maleimide onto graphite fibers in aqueous solution
Author(s) -
Iroh J. O.,
Bell J. P.,
Scola D. A.
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070470112
Subject(s) - maleimide , styrene , copolymer , polymer chemistry , sulfuric acid , aqueous solution , hydroquinone , polymerization , monomer , chemistry , radical initiator , graphite , reactivity (psychology) , radical polymerization , organic chemistry , polymer , medicine , alternative medicine , pathology
Electrochemical copolymerization of styrene and N ‐(3‐carboxyphenyl)maleimide was performed in an aqueous sulfuric acid solution using AS‐4 graphite fibers as the working electrode. Cyclic voltammetric analysis results suggest radical initiation of polymerization via the reduction of the N ‐(3‐carboxyphenyl)maleimide and sulfuric acid. Radical chain electrocopolymerization was strongly suggested by the inhibition of chain growth in the presence of hydroquinone and 2,2‐diphenylpicrylhydrazyl (DPPH). Compositional analysis of copolymers and reactivity ratios r s ∼ 0.014 and r m ∼ 0.041 for styrene and N ‐(3‐carboxyphenyl)maleimide [ N ‐(3‐CMI)], respectively, confirmed a 1 : 1 alternating electrocopolymerization. Kinetic analysis shows a first‐ and 1/2‐order dependence of the rate of chain growth on initial monomer concentration and initiator concentration, respectively. A model incorporating these data is presented. © 1993 John Wiley & Sons, Inc.