Adhesion improvement of lignocellulosic products by enzymatic pre-treatment.
Enzymatic bonding methods, based on laccase or peroxidase enzymes, for lignocellulosic products such as medium-density fiberboard and particleboard are discussed with reference to the increasing costs of presently used petroleum-based adhesives and the health concerns associated with formaldehyde emissions from current composite products. One approach is to improve the self-bonding properties of the particles by oxidation of their surface lignin before they are fabricated into boards. Another method involves using enzymatically pre-treated lignins as adhesives for boards and laminates. The application of this technology to achieve wet strength characteristics in paper is also reviewed.
Widsten
Petri
P
Wood Kplus, Kompetenzzentrum Holz, Wood Carinthian Competence Center (W3C), Klagenfurterstrasse 87-89, A-9300 St. Veit an der Glan, Austria. p.widsten@kplus-wood.at
Kandelbauer
Andreas
A
D000268:Adhesiveness; D004798:Enzymes / Q000378:metabolism*; D008031:Lignin / Q000378:metabolism*; D010209:Paper; D014934:Wood / Q000378:metabolism
D004798:Enzymes; C036909:lignocellulose; D008031:Lignin