The use of tree leaves as reinforcement in composites with recycled PE-HD matrix
Polimery 2012, No 9, 646
The composites based on high density polyethylene gained from selective collection of packaging waste, filled with various amounts of milled leaf flour of different trees (lime-tree, nut-tree, maple and sour cherry), were produced. The obtained natural fibre composites (NFC) were analyzed for their physical, mechanical and flammability properties as well as the resistance to environmental factors. They are characterized by a low density (Fig. 3), relatively small water content (Fig. 4) and low moisture absorptivity (Fig. 10). The introduction of leaf flour into the PE-HD matrix increases the hardness (Fig. 6) and stiffness (Fig. 7) as well as it improves the tensile strength up to 40 vol. %. filler content (Fig. 8). The thermal properties of the composites allow for their safe use in ambient temperatures both inside and outside buildings (Fig. 11).