Development of a chitosan-based adhesive. Application to wood bonding

Authors

  • Anil K. Patel,

    1. Clermont Université, Université Blaise Pascal, Institut Pascal UMR CNRS 6602, Campus des Cezeaux, 24 avenue des Landais, F-63174, Aubière cedex, France
    Search for more papers by this author
  • Philippe Michaud,

    1. Clermont Université, Université Blaise Pascal, Institut Pascal UMR CNRS 6602, Campus des Cezeaux, 24 avenue des Landais, F-63174, Aubière cedex, France
    Search for more papers by this author
  • Emmanuel Petit,

    1. Laboratoire des Glucides UMR 6219, Université de Picardie Jules Verne, 33 rue Saint-Leu, F-80039 Amiens, France
    Search for more papers by this author
  • Hélène de Baynast,

    1. Clermont Université, Université Blaise Pascal, Institut Pascal UMR CNRS 6602, Campus des Cezeaux, 24 avenue des Landais, F-63174, Aubière cedex, France
    Search for more papers by this author
  • Michel Grédiac,

    1. Clermont Université, Université Blaise Pascal, Institut Pascal UMR CNRS 6602, Campus des Cezeaux, 24 avenue des Landais, F-63174, Aubière cedex, France
    Search for more papers by this author
  • Jean-Denis Mathias

    Corresponding author
    1. IRSTEA, Laboratoire d'Ingénierie pour les Systèmes Complexes, Campus des Cézeaux, 24 avenue des Landais—BP 50085, 63172 Aubière Cedex, France
    • IRSTEA, Laboratoire d'Ingénierie pour les Systèmes Complexes, Campus des Cézeaux, 24 avenue des Landais—BP 50085, 63172 Aubière Cedex, France
    Search for more papers by this author

Abstract

The potential of chitosan (CS) as wood adhesive was investigated in this study. The measurement of the bond strength of different CS-based formulations was carried out using double-lap shear tests. The best formulation tested was an adhesive composed of 6% of CS, 1% of glycerol, and 5 mmol/L of trisodium citrate dehydrate. Best bond strength from this formulation was found to be equal to 6.0 MPa in dried conditions and 1.6 MPa in wet conditions (specimens immersed for 3 h at 30°C in water). The failure in the double-lap joint tests mainly occurred in wood. Finally, the penetration of the rhodamine-labeled CS at 4% in the pinewood matrix was also studied using microtome and microscopy techniques to show interactions between CS-based adhesive and wood. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2013

Ancillary