Physico-mechanical properties of buluh madu (gigantochloa albociliata) particleboard bonded with different solid content and resin content of citric acid

This study investigated the physico-mechanical properties of particleboard manufactured from Buluh Madu (Gigantochloa albociliata) bamboo particles bonded with varying ratios of citric acid resin and solid content. Citric acid was used as a sole eco-friendly adhesive at resin contents of 10%, 20%, and 30% and solid content of 60% and 70%. Particleboards were fabricated by hot pressing method and tested for thickness swelling, water absorption, modulus of rupture (MOR), and modulus of elasticity (MOE) according to JIS A 5908:2003. The results showed that increasing citric acid resin to 30% improved dimensional stability by minimizing thickness swelling and water absorption. The adhesive resin ratio also enhanced mechanical strength, with 30% resin achieving the highest MOR and MOE values. However, varying the solid content between 60% and 70% did not significantly impact the board properties. The outcomes demonstrated the effectiveness of citric acid as a green binder for manufacturing bamboo particleboard with excellent physio-mechanical characteristics. This study promotes environmentally sustainable composite manufacturing practices by advancing knowledge on citric acid formulations for application with underutilized bamboo resources.