Study on preparation of high-performance binderless board from Broussonetia papyrifera

Abstract Binderless particleboards were prepared without any resin adhesives from Broussonetia papyrifera trunk by hot pressing. The effects of particle size, pressing time, temperature and board density on the physical mechanical properties binderless boards investigated. chemical changes in investigated chemical, spectroscopic cellulose crystallinity analyses. bonding performance latex was discussed. results showed: (1) smaller size particle, higher internal (IB) strength lower thickness swelling (TS) had. modulus rupture (MOR), elasticity (MOE) IB values increased with increase density. Within a certain range, manufactured at longer time had better properties. Under optimum manufacturing condition 220 ℃/30 min/1.0 g/cm 3 , recorded MOR 28 MPa, MOE 5.3 GPa, 2.74 MPa 24 h TS 7.4%, which met requirements Chinese national standard for heavy-duty particleboard. (2) degradation hemicellulose during resulted decrease content extractives. Some products form new to dimensional stability boards. (3) formation pseudo-lignin C–O–C contributed high quality (4) poplar veneers bonded (0.6 MPa), indicating played positive role self-bonding