Multisite catalyst mediated polymer nanostructure formation and self-reinforced polyethylene reactor blends with improved toughness/stiffness balance

All-polyethylene nanocomposites are tailored by three-site catalysts mediated nanostructure formation to obtain self-reinforced polyethylene materials. Unlike state-of-the-art polyolefin nanocomposites, requiring either tedious alien nanoparticle dispersion or lamination of drawn polyolefin fibers and tapes, these polyethylene reactor blends exhibit an unprecedented toughness/stiffness balance by shear-induced oriented polyethylene crystallization during injection molding with ultrahigh molecular weight polyethylene contents up to 30 wt %.182