Self-reinforced polyethylene by SCORIM techniques

MD = machine direction TD = transverse direction ND = normal direction 

1) Biaxially self-reinforced HDPE moldings can be produced in a uniaxial shear flow field. The tensile strength in both MD and TD is remarkably enhanced in biaxially self-reinforced samples. The HDPE molded -with the best biaxially self-reinforced effect exhibits a 42% increase in the tensile strength along both MD and TD. 

3) DSC, WAXD, small-angle X-ray scattering (SAXS), and tunnel electron microscope (TEM) were employed to study the microstructure of biaxially self-reinforced HDPE prepared in uniaxial shear field by DPIM. The results indicate that the biaxial self-reinforcement of HDPE is mainly due to the existence of interlocking shish kebab morphology, the orientation of lamellae and molecular chains, along with the enhanced crystallinity. 

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