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Curing process of phenol-urea-formaldehyde-tannin (PUFT) adhesives

Kinetic studies by DSC and DMA

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Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Summary

Phenol-urea-formaldehyde-tannin (PUFT) adhesives have been prepared by copolymerization at room temperature of pine bark tannins with phenol-urea-formaldehyde (PUF) prepolymers prepared under varying operating conditions. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) have been used to analyse the curing of prepolymers and adhesives. DSC curves were obtained at three different heating rates and, by means of the Model Free Kinetics isoconversional method, chemical conversion vs. time at a given temperature was obtained. Mechanical conversion was calculated from DMA storage modulus data for those adhesives which gave the best results for plywood and MDF boards.

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Authors and Affiliations

  1. Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa, 15782 Santiago de Compostela, Spain

    G. Vázquez

  2. Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa, 15782 Santiago de Compostela, Spain

    F. López-Suevos

  3. Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa, 15782 Santiago de Compostela, Spain

    J. González-Alvarez

  4. Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, Lope Gómez de Marzoa, 15782 Santiago de Compostela, Spain

    G. Antorrena

Authors
  1. G. Vázquez
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  2. F. López-Suevos
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  3. J. González-Alvarez
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  4. G. Antorrena
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Vázquez, G., López-Suevos, F., González-Alvarez, J. et al. Curing process of phenol-urea-formaldehyde-tannin (PUFT) adhesives. J Therm Anal Calorim 82, 143–149 (2005). https://doi.org/10.1007/s10973-005-0855-7

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  • DOI: https://doi.org/10.1007/s10973-005-0855-7

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