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    ARTICLE

    Hydroxymethylfurfural Hardening of Pine Tannin Wood Adhesives

    F.-J. Santiago-Medina1, A. Pizzi1,2,*, S. Abdalla2

    Journal of Renewable Materials, Vol.5, No.5, pp. 435-447, 2017, DOI:10.7569/JRM.2017.634166

    Abstract An adhesive based on the reaction of a very fast reacting procyanidin-type condensed tannin, namely purified pine bark tannin, with a biosourced nontoxic and nonvolatile aldehyde derived from the pulp and paper industry, namely hydroxymethylfurfural (HMF), was shown to almost satisfy the relevant standards for bonding wood particleboard. The conditions of pH used are determinant for the result. The oligomers obtained by the reaction and their distribution have been determined by matrix-assisted laser ionization desorption time-of-flight (MALDI-TOF) mass spectrometry. Of the two reactive groups of hydroxymethylfurfural capable of reacting, the furanic aldehyde one and the More >

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