Premium
Initiation, propagation and termination in free radical copolymerization
Author(s) -
Russo Saverio
Publication year - 1987
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19870100120
Subject(s) - copolymer , monomer , homogeneous , polymerization , kinetic scheme , polymer chemistry , sequence (biology) , kinetic energy , radical polymerization , thermodynamics , chemistry , kinetics , diffusion , materials science , polymer , physics , organic chemistry , classical mechanics , biochemistry
Abstract At present, the full sequence of events in free‐radical copolymerization cannot be described by a simple kinetic scheme. Indeed, several attempts to derive the copolymerization rate in homogeneous media on the basis of the usual assumptions considered valid for the polymerization of a single monomer have completely failed in terms of general validity. An overview of the various models, from the classical one based on the chemical control of the bimolecular termination reaction to the more modern approaches which include diffusion control of the termination stage, is presented and critically examined. The complex kinetic behavior which has already been evidenced in previous chapters for the polymerization of many monomer systems is re‐examined in terms of its relevance in the kinetics of the copolymerizing pair. The effect of the reaction medium separately on initiation, propagation, and termination is analyzed and new perspectives for experimental as well as theoretical studies are examined.