Formaldehyde–free sticklac and arhar stick composite board

Abstract

Sticklac has been used as a binding material to prepare formaldehyde-free composite board from arhar (Cajanus cajan) stick agro waste. Effects of sticklac obtained from kusmi and rangeeni strain, binder content, press-cycle, particle type, moisture content, density of board and wax emulsion as additive are studied on physical and mechanical properties of board. Tests of modulus of rupture, tensile strength perpendicular to surface of board, screw withdrawal force, water absorption and thickness swelling have indicated that composite board prepared using sticklac in alcoholic solution can meet required standard for interior grade with regard to above properties.