One layer experimental particleboard from coconut chips - (Cocos nucifera L.)

This article validates the technical feasibility of making one layer experimental particleboard from coconut chips bonded with EMDI isocyanate resin. The European Standards for particleboards used in interior fitments (EN 312; P2 and P3 boards) were satisfied at dosing rates of 4% EMDI. The P4 load bearing board used in dry conditions, however, required a higher dosage rate of 6% EMDI with 1% wax. When the data was evaluated using the ANSI A208.1-1998 standards for particleboards, it was found that the modulus of rupture and internal bond were easily satisfied with an application of 6% EMDI, however, a higher dosing rate of 8% EMDI resin and 0.5% wax was needed mainly to satisfy the thickness swell criteria. Although these high resin application rates for particleboards made with coconut chips may not be economically practical for some uses, this valuable resource does show some promise for P2 and P3 boards. It is suggested that a combination of coconut chips with industrial wood chips may be explored in order to improve the thickness swelling properties of the particleboards.