Sifat Fisis Dan Mekanis Papan Laminasi Bambu Belangke (Gigantochloa pruriens) Termodifikasi Asam Sitrat

Abstract

Using bamboo in derived products made from laminated board is the right choice to replace wood as a structural material. Belangke bamboo can be used in the production of laminated boards due to its strong mechanical properties. Long-term citric acid immersion is expected to improve strength and durability against destructive organisms. The purpose of this study is to analyze the physical and mechanical properties of striped bamboo laminates after long-term citric acid immersion treatment. The immersion treatment given is 0 hours, 6 hours, 12 hours, and 24 hours with a citric acid concentration of 20%. The laminated board is made with a size of 30 x 15 x 1.5 cm (Length x Width x Thickness) consisting of 3 layers using 280 g/m2 isocyanate adhesive cold-pressed for 24 hours with conditioning for 10 days. Physical property test results for laminates show average values of WPG (percent gain) ranging from 7,00-10,00%, density ranging from 0,79–0,86 g/cm3 , moisture content ranging from 11,86–12,67%, and delamination ranging from 0,00- 7,77%. Laminated board were tested for mechanical properties and average values were obtained of MOE ranging 113686–127378 kg/cm2 , MOR ranging from 516,97–578,95 kg/cm2 , and shear strength 20,53–27,73 kg/cm2 . Based on the results of analysis of variance, the best laminate board was found in the 24 hour immersion treatment