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Properties of phenol–formaldehyde resin modified with organic acid esters
Author(s) -
Mirski Radosław,
Dziurka Dorota,
Łęcka Janina
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27456
Subject(s) - phenol , formaldehyde , phenol formaldehyde resin , curing (chemistry) , hydrolysis , reactivity (psychology) , chemistry , activation energy , fourier transform infrared spectroscopy , alcohol , organic chemistry , polymer chemistry , chemical engineering , medicine , alternative medicine , pathology , engineering
Properties of liquid and cured phenol–formaldehyde (PF) resin modified with esters were analyzed in this study. Esters with different carbon chain lengths, both in the acid and alcohol groups, were applied in the experiments. It was found that the modification of phenolic resin with applied esters does not deteriorate its pot life at the temperature of 20°C. It results in an increase of its reactivity at higher temperatures, manifested in the shortening of gel time at 130°C and a decrease of activation energy. Results of FTIR tests of polycondensed modified PF resin showed that products of alkali hydrolysis of esters not only catalyze the curing reaction of resin, but also become embedded in its structure. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008