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Ring‐chain competition kinetic models for linear and nonlinear step‐reaction copolymerizations
Author(s) -
Sarmoria Claudia,
Vallés Enrique,
Miller Douglas R.
Publication year - 1986
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.19860020109
Subject(s) - intramolecular force , monomer , gel point , chemistry , gaussian , ring (chemistry) , kinetic energy , chain (unit) , competition (biology) , nonlinear system , computational chemistry , thermodynamics , polymer , stereochemistry , physics , organic chemistry , quantum mechanics , astronomy , ecology , biology
Mathematical models of kinetically controlled random copolymerizations with intramolecular reactions have been developed for A 2 + B 2 and A 3 + B 2 type reactions, in which the B 2 monomer is long and flexible enough to have a Gaussian end‐to‐end distance. Concentrations of different molecular species are calculated, as well as weight‐average molecular weight, gel point and various network parameters. The calculations show the influence of the molecular weight and the concentration of reactants on the amount of intramolecular reaction. The results indicate that the main deviations from ideality are due to the smaller rings.