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Wood-plastic composite
Leandro Shiroma
School of Agricultural Engineering, State University of Campinas
Campinas, São Paulo, Brasil
Prof.Dr.Antonio Ludovico Beraldo
School of Agricultural Engineering, State University of Campinas
Campinas, São Paulo, Brazil
Abstract
Wood is one of the most important raw materials in Brazil, mainly for the industry of
construction, packing, furniture among others. In the mechanic process of cutting wood,
large volumes of sawdust can eventually pollute the rivers and landfills. There is a great
deal for the society to find some rational use for such wastes, like as an energy source to
replace the coal, the diesel oil, and enhances its capability in exchange for carbon credits.
Following this trend, studies were developed at several countries looking for the reuse of
vegetable fibers as reinforcement in thermoplastics matrices, for several industry
applications.
The objective of this work was to develop a composite from Pinus sp residues and
recycled plastics, such as polypropylene (PP) and polyethylene (PE), seeking their use in
the manufacture of pallets components.
Keywords: Wood, Plastics, Composites, wood-stock, fiber, PP, PE
Bibliographic Review
Characterization of the residue of saw dust of the manufacturing process of pallets
One wood pallets company, located at the region of Campinas, Brazil, leads daily amount
of 100 ton of waste from sawdust. Currently this waste is used as a source of burning
energy in industries of this region. Pinus sp is the principal waste wood used as a load of
more thermoplastics in Brazil. Its bulk density is between 0.15 a 0.374 kg/m3
. Its
chemical composition is 50.1% of cellulose, 30.3% of lignin, 9.7% of hemicelluloses and
10% of other substances (CAMARGO, 2006).
Sawdust as reinforcement in thermoplastic (wood-plastic compound)
Thermoplastic composites with sawdust (WPC) have some advantages...