INVESTIGADORES
MANFREDI liliana Beatriz
artículos
Título:
Modelling of resol resin polymerization with different formaldehyde/phenol molar ratio
Autor/es:
L. B. MANFREDI; C. RICCARDI; O. DE LA OSA; A. VÁZQUEZ
Revista:
POLYMER INTERNATIONAL
Editorial:
John Wiley and Sons Ltd
Referencias:
Lugar: Chichester; Año: 2001 vol. 50 p. 1 - 7
ISSN:
0959-8103
Resumen:
Kinetics of polymerisation of phenol and formaldehyde was modelled to account for the formation of resol resin with different initial formaldehyde-to-phenol molar ratio. The conversion of phenol and formaldehyde was used for determining the equilibrium constants for phenolate ion and methylene glycol. The relative concentration of each compound was obtained as a function of time. The molecular weight was also determined for each resol resin at the end of the reaction. The evaluation of substituted phenols, hydroxymethylol phenols and methylene bridges was done by means of infrared spectroscopy. The experimental tendencies were in agreement with the model´s results.
