| Summary: | Various efforts to overcome the plastic waste continues to be pursued.
Efforts is by utilizing waste plastics into composite materials. Wood plastic
composite which has the advantages of wood as a useful filler to increase rigidity,
reduce density and cost per unit volume, while the plastic as the matrix will
increase the strength and physical properties of composites are formed so
impervious to water and termites. In this research, the composite material was
made from sawdust sengon with recycled plastic Polypropylene types (PP) and
High Density Polyethylene (HDPE). The purpose of this research is the use of
plastic waste from type of PP, HDPE and sawdust sengon as composite materials,
knowing the physical and mechanical properties of plastic composite with a
variety of materials composition, assess the potential sustainability the business of
making a composite made from a mixture of plastic waste and sawdust sengon.
The independent variables consist of the type of plastic and plastic powder
composition, while the dependent variable consists of the physical properties
(water content, density, water absorption and thickness swelling), and mechanical
properties (Modulus of Rupture, Modulus of Elasticity, and Internal bond
strength). This research uses a completely randomized design with a factorial
arranged in a single factor , i.e. the ratio between sengon sawdust and plastic with
three cedar i.e. 2:1, 1:1, and 1:2. The results obtained from this research are
physical properties and Internal Bonding of composite boards accordance with JIS
A 5908-2003 type of 13. MoR values for all PP plastic sample and just part of
composite made from HDPE accordance with JIS A 5908-2003 type 8. Production
of composite board with comparison sawdust sengon : PP plastic waste ( 2:1 ) in
the study sustainability many positive value, especially economic aspect. The
investment value for this composite board production enterprises will be back
within a period of 10 months.
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