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Radical copolymerization of fullerene (C 60 ) and n ‐butyl methacrylate (BMA) using triphenylbismuthonium ylide and characterization of C 60 –BMA copolymers
Author(s) -
Katiyar Rashmi,
Bag Dibyendu S.,
Nigam Indira
Publication year - 2011
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20584
Subject(s) - copolymer , ylide , chemistry , polymer chemistry , fullerene , polymerization , methacrylate , kinetics , radical polymerization , organic chemistry , polymer , physics , quantum mechanics
Radical copolymerization of fullerene (C 60 ) and n ‐butyl methacrylate (BMA) has been carried out using triphenylbismuthonium ylide as an initiator at 70°C for 4 h in a dilatometer under nitrogen atmosphere. The kinetic expression of the polymerization is R p α [Ylide] 0.5 [C 60 ] −1.0 [BMA] 1.2 , which is similar to that expected for ideal kinetics. The rate of polymerization increases with an increase in the concentration of initiator and BMA. However, it decreases with an increase in the concentration of fullerene. Fullerene acts as radical scavengers causing retardation in polymerization. The activation energy of copolymerization was estimated to be 72.2 K J mol −1 . The fullerene‐containing BMA copolymers were characterized by FTIR, 1 H NMR, 13 C NMR, UV–vis, and GPC analyses. © 2011 Wiley Periodicals, Inc. Int J Chem Kinet 43: 608–619, 2011