INVESTIGADORES
MAURI Adriana Noemi
artículos
Título:
Kinetic Model for Gelation in the Diepoxide-Anhydride Copolymerization Initiated by Tertiary Amines
Autor/es:
ADRIANA N MAURI; NORMA GALEGO; CARMEN RICARDDI; ROBERTO JJ WILLIAMS
Revista:
MACROMOLECULES
Editorial:
AMER CHEMICAL SOC
Referencias:
Lugar: Washington; Año: 1997 vol. 30 p. 1616 - 1620
ISSN:
0024-9297
Resumen:
The best models available in the literature to analyze gelation in the diepoxide-cyclic
anhydride copolymerization are based on the mean-field approach. A kinetic model was developed to
account for the nonrandom steps of the copolymerization. Two kinetic schemes were employed with one
including chain transfer steps. Predicted gel-point conversions as a function of the initiator concentration
were compared with experimental results obtained for a system based on diglycidyl ether of bisphenol A,
methyltetrahydrophthalic anhydride, and benzyldimethylamine, as initiator. Both kinetic schemes
explained the observed first-order kinetics for monomer consumption, after an induction period. However,
experimental gel-point conversions could only be fitted by assuming the presence of a chain transfer step
regenerating an active species
anhydride copolymerization are based on the mean-field approach. A kinetic model was developed to
account for the nonrandom steps of the copolymerization. Two kinetic schemes were employed with one
including chain transfer steps. Predicted gel-point conversions as a function of the initiator concentration
were compared with experimental results obtained for a system based on diglycidyl ether of bisphenol A,
methyltetrahydrophthalic anhydride, and benzyldimethylamine, as initiator. Both kinetic schemes
explained the observed first-order kinetics for monomer consumption, after an induction period. However,
experimental gel-point conversions could only be fitted by assuming the presence of a chain transfer step
regenerating an active species
anhydride copolymerization are based on the mean-field approach. A kinetic model was developed to
account for the nonrandom steps of the copolymerization. Two kinetic schemes were employed with one
including chain transfer steps. Predicted gel-point conversions as a function of the initiator concentration
were compared with experimental results obtained for a system based on diglycidyl ether of bisphenol A,
methyltetrahydrophthalic anhydride, and benzyldimethylamine, as initiator. Both kinetic schemes
explained the observed first-order kinetics for monomer consumption, after an induction period. However,
experimental gel-point conversions could only be fitted by assuming the presence of a chain transfer step
regenerating an active species
-cyclic
anhydride copolymerization are based on the mean-field approach. A kinetic model was developed to
account for the nonrandom steps of the copolymerization. Two kinetic schemes were employed with one
including chain transfer steps. Predicted gel-point conversions as a function of the initiator concentration
were compared with experimental results obtained for a system based on diglycidyl ether of bisphenol A,
methyltetrahydrophthalic anhydride, and benzyldimethylamine, as initiator. Both kinetic schemes
explained the observed first-order kinetics for monomer consumption, after an induction period. However,
experimental gel-point conversions could only be fitted by assuming the presence of a chain transfer step
regenerating an active species