Ring Chain Competition Kinetic Models for Linear and Nonlinear Step Reaction Copolymerizations

SARMORIA, C; VALLÉS, E M; MILLER, D R

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS

Huthig & Wepf Verlag

Lugar: Basel; Año: 1986 vol. 2 p. 69 - 87

0025-116X

Mathematical models of kinetically controlled random copolymerizations with intramolecular reactions have been developed for A2+B2 and A3+B2 type reactions, in which the B2 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.