Improvement of the impact resistance of natural fiber–reinforced polypropylene composites through hybridization

Polypropylene (PP) hybrid composites were prepared by the combination of natural reinforcements and poly(ethylene terephthalate) (PET) fibers. Wood, flax, sugar palm fibers used to increase stiffness strength, while PET served improve impact resistance. Interfacial adhesion was increased using a maleated PP (MAPP) coupling agent. The containing 20 wt% homogenized in twin-screw compounder then injection molded into standard tensile specimens. amount changed from 0 40 composites. Tensile testing, acoustic emission measurements, scanning electron microscopy (SEM) for characterization as well follow deformation failure processes. results proved that concept resistance works with all Local deformations, debonding or pullout fibers, initiate plastic matrix, which consumes considerable energy. fracture might also contribute energy absorption. type fiber does not influence effect; determines improvement interfacial increases strength slightly improves overall properties are acceptable, sufficiently large being achieved number structural applications.