Isolation of lignocellulose nanofibrils (LCNF) and application as adhesive replacement in wood composites: example of fiberboard

摘要: Thermomechanical pulp (TMP) produced using atmospheric refining was ground to isolate lignocellulose nanofibrils (LCNF). Forty minutes and a specific energy of about 1300 kWh/t were necessary reach the end-point process defined by presence 95% fines in slurry. 100% reached after 90 min 5800 kWh/t. The similarity structure between pilot-scale reference cellulose (CNF) LCNF with an average fibril diameter 12 nm confirmed negligible effect residual lignin on defibrillation process. thermal stability found be 30 °C lower compared that CNF due influence, but it range processing temperatures used for wood composite materials. as adhesive replacement fiberboard has been assessed. A maximum modulus rupture 12.1 MPa comparable commercial fiberboards high elasticity, obtained at 20% content panels 180 °C. binding ability its mechanical properties more perceptible when less refined TMP fine longer fibers