The low maintenance cost of wood plastic composite (WPC) is generating a boom in the market of wood
composites products. An attempt is made to fabricate WPCs with saw dust of pine wood flour which is
wastages of wood/furniture industry. These composites (WPCs) are made using matrices of recycled
polypropylene (rPP) with sawdust (Pine Wood flour) as filler. Corresponding WPCs are also made using
virgin plastics (vPP) for comparison with the recycled plastic based composites. All varieties of these WPCs
are made through melt compounding and injection moulding with varying formulations based on the plastic
type (PP), plastic form (recycled and virgin), wood four content and addition of coupling agent(MAPP). The
water absorption and thickness swelling evaluated. To understand the changes in WPCs stability and
durability performance, microstructure of the composites are examined, Incorporation of maleated
polypropylene (MAPP) coupling agent in composite formulation improved the stability. Scanning electron
microscopy (SEM) images of the fractured surfaces of WPCs confirmed that the MAPP coupling improved
the interfacial bonding between the plastic and the wood filler for the series of composites