POTENCY OF PAPER MILL WASTE AS RECYCLABLE POLYPROPYLENE FILLED WITH COCONUT FIBER COMPOSITE FOR MITIGATIONAL MATERIAL

Regarding its geographical location, West Sumatra is an area prone to earthquakes. The solution to this condition is by mitigating the effects through the construction of earthquake-resistant buildings. Earthquake-resistant buildings may be constructed by replacing polymeric materials with characteristics of light, durable and good flexibilities. One of which by replacing stone as common building structure with composite material. Composite wall panels that are expected to be utilized to construct a resistant building, are made by mixing polypropylene plastic waste with coconut fiber and primary sludge from paper mill waste. The mixing method was performed using an extruder (dry mixing with heat). Composition of coconut fiber, primary sludge, and paper mill waste were 20:20:60, respectively based on the previous study. Method for casting composite wall panels was performed using hot-press. The composite wall panels showed a flexural properties of 9.6 N/mm 2 , modulus of elasticity of 2,640 N/mm 2 , melt temperature at 161.21 o C, combustion point at 463.55 o C, decomposition point at 476.99 o C, carbon residue of 15.1%, density of 1.093 g/cm 3 , thickness swelling of 0.104%, internal bond strength of 0.61 N/mm 2 , a good morphochemical interaction and following EN 634-2-2007 standard.