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Modelling of resol resin polymerization with various formaldehyde/phenol molar ratios

✍ Scribed by Liliana B Manfredi; Carmen C Riccardi; Orlando de la Osa; Analía Vázquez

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
153 KB
Volume
50
Category
Article
ISSN
0959-8103

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✦ Synopsis

Abstract

The kinetics of polymerization of phenol and formaldehyde are modelled to account for the formation of resol resin with various initial formaldehyde/phenol molar ratios. The conversion of phenol and formaldehyde is used to determine the equilibrium constants for phenolate ion and methylene glycol. The relative concentration of each compound is obtained as a function of time. The molecular weight is also determined for each resol resin at the end of the reaction. The evaluation of substituted phenols, hydroxymethylol phenols and methylene bridges was carried out by infrared spectroscopy. The experimental tendencies are in agreement with the results of the model.

© 2001 Society of Chemical Industry

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