Search

This test was carried out to reduce waste in coconut empty fruit bunches and to determine the characteristics and microstructure of the particle board surface. The samples used consisted of bamboo powder and oil palm empty fruit bunches with gambier adhesive and urea formaldehyde with variations including: 10%:75%:15%:11%; 20%:65%:15%:11%, 30%:55%:15%:11%, 40%:45%:10%:11%. The particleboard was printed and pressurized using a hot press of 16kg/cm2 for 15 minutes at a temperature of 120 oC, with a drying time of 14 days. The test parameters include: density, moisture content, thickness expansion, and microstructural analysis using SEM (Scanning Electron Microscopy) which refers to SNI 03-2105-2006. The characterization of particleboard produced in the density test is 0.66-0.74 g/cm3, the water content value is 2.4-6.9%, the thickness expansion value is 7.2-12%. Based on the percentage value of the density of the resulting particleboard is a medium density particleboard.

Biobattery research has been carried out using cassava leaves (Manihot Utilissima) as a substitute for carbon in some 1.5 volt batteries. And tested the voltage with the results of sample A: 1.53 volts; B: 1.54 volts; C: 1.55 volts; and D: 1.58 volts. Then the electric current was also tested with the values obtained in sample A: 0.08 mA; B: 0.10 mA; C: 0.13 mA; and D: 0.19 mA. If the carbon mass in the biobattery gets higher, the value of the voltage and electric current test results changes with the higher in each sample. By performing the performance on the cassava leaf biobattery, it is able to turn on a 2.5 watt LED lamp with 3 batteries. Keywords: Current, cassava leaves, and voltage

The particle board was made based on mixing durian skin and sugar cane bagasse with urea formaldehyde adhesive. The variations the composition of mixing durian skin, sugar cane bagasse with urea formaldehyde adhesive used among other: 35%:35%:30%, 30%:30%:40%, and 25%:25%:50% and printing time and pressing for 24 hours. The parameters of the testing include: Modulus of Rupture (MOR) dan Modulus of Elasticity (MOE) . Analysis of the mechanical properties of the particle board produced at the composition of 35%:35%:30% which has a value MOR = 446,17 kgf/cm 2 and MOE = 160,9 kgf/cm 2 , at the composition of 30%:30%:40%, has a value MOR = 1369,57 kgf/cm 2 dan MOE = 3903,3 kgf/cm 2 , at the composition of 25%:25%:50%, has a value MOR = 1463,07 kgf/cm 2 , dan MOE = 3342,1 kgf/cm 2 which matches SNI 03-2105-2006 criteria type 8 is not required.