Thermal behaviour of phenol-formaldehyde (PF) compounds

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Title: Thermal behaviour of phenol-formaldehyde (PF) compounds
Author(s): Tonge, L. Y.; Yazaki, Y.; Blicblau, A. S.
Abstract: The self-condensation reactions of 2- and 4-mono-methylol phenols (2-MMP and 4-MMP), in the presence of varying concentrations of NaOH, have been studied by differential scanning calorimetry (DSC). The reaction exotherms were analyzed to derive the activation energy, Ea, and the heat of reaction, HT, for the condensation reactions. In the case of 2-MMP an increase in NaOH:2-MMP molar ratio caused an increase in Ea and a decrease in HT up to a molar ratio of 0.6:1. However, for 4-MMP, an increase in NaOH concentration caused an increase in Ea up to a molar ratio of 0.3:1 beyond which there appeared to be no further effect. The presence of NaOH had no effect on HT for this compound. The results suggest that in the range of NaOH concentration used the effect of NaOH was substantially greater on 2-MMP compared to 4-MMP.
Publication type: Journal article
Research centre: Swinburne University of Technology. School of Engineering and Science
Source: Journal of Thermal Analysis and Calorimetry: incorporating the proceedings of the 7th European Symposium on Thermal Analysis and Calorimetry, Balatonfured, Hungary, 30 August-04 September 1998, Vol. 56, no. 3 (Nov 1999), pp. 1347-1352
Publication year: 1999
FOR Code(s): 0303 Macromolecular and Materials Chemistry; 0306 Physical Chemistry (Incl. Structural); 0399 Other Chemical Sciences
Keyword(s): Activation energy; Caustic soda; Condensation reactions; Differential scanning calorimetry; Formaldehyde; Heat of reaction; Phenols
Publisher: Kluwer Academic Publishers
ISSN: 1388-6150
Publisher URL: http://dx.doi.org/10.1023/A:1010158507360
Peer reviewed