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P article board was made using processed oil palm empty fruit bunch and casein glue. This research use d two factor variables and eight response variables to determine the best matrix/filler ratio and compression pressure for particle board production. The factor variables, (matrix/filler ratio and compression pressure), determine d the response variables : modulus of rupture, water content, density, tensile strength, and both endot h ermic - and - exot h ermic temperatures and heats. This research aim ed to optimize the mechanical and physical property of particle boards by using the bunc h/ glue ratio. The processing of d ata was undertaken by R esponse S urface M ethod (RSM) with Central Composite D esign (CCD) . The optimal condition s under which particle board created were at matrix/filler ratio of 50 : 50 and compression pressure of 3.53 kg/cm 2 ; resulting in a modulus of rupture of 325.32 kg/cm 2 , water content of 0.009%, density 0.826 g/cm 3 , and tensile strength of 2.573 kg/cm 2 . This research also indicate s that casein glue results in particle board with optim um parameters of endot h ermic temperature of 247.74 °C, an endot h ermic heat of -4.122 mW, exot h ermic temperature of 431.08 °C, and exot h ermic heat of 7.526 mW. Based on physical testing, most particle board properties obtained fulfilled the standard s of water content and density as required by the Indonesian National Standard / SNI 03-2105-2006 .

Characterizing Particle Board Made of Oil Palm Empty Fruit Bunch Using Central Composite Design