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Kinetic investigation of the radical polymerization of N ‐acryloylpiperidine in solution
Author(s) -
Ebraheem Kais A. K.,
AlIssa Mahmoud A.,
Mohammed Nedhal Y.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990310403
Subject(s) - azobisisobutyronitrile , monomer , kinetics , polymerization , radical polymerization , chemistry , reaction rate constant , polymer chemistry , activation energy , benzene , photochemistry , polymer , organic chemistry , physics , quantum mechanics
The kinetics of free radical polymerizations of N ‐acryloylpiperidine (NAPi) were studied in benzene (Bz) using 2,2′‐azobisisobutyronitrile (AIBN) as initiator. The activation energy was determined to be 111.7 kJ mol −1 . The overall rate of polymerization of the NAPi‐AIBN‐Bz system at 60°C was investigated as a function of monomer and initiator concentrations. Deviation from normal kinetics was observed with an order of 1.48 with respect to the monomer. The observed dependence of the rate constants k p / k t 1/2on monomer concentration could not be explained by the diffusion theory or the theory of electron donor‐acceptor (EDA) complexes. The observed data have, however, been satisfactorily interpreted by the ‘hot’ radical theory.