Journal of Thermal Analysis and Calorimetry

, Volume 56, Issue 3, pp 1347–1352 | Cite as

Thermal Behaviour of Phenol-Formaldehyde (PF) Compounds

  • L. Y. Tonge
  • Y. Yazaki
  • A. S. Blicblau
Article

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 analysed 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 increased 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.

activation energy differential scanning calorimetry heat of reaction 2-mono-methylol phenol 4-mono-methylol phenol 

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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • L. Y. Tonge
    • 1
  • Y. Yazaki
    • 2
  • A. S. Blicblau
    • 1
  1. 1.School of Engineering and ScienceSwinburne University of TechnologyVictoria3122
  2. 2.CSIRO Forestry and Forest ProductsVictoriaAustralia

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