You are warmly invited to attend the BRCB Friday afternoon seminar: "Small- and wide-angle X-ray scattering and modelling of microstructure in extrusion-coated polyethylene during uni- and biaxial loading"

Speaker

Konstantin Kriechbaum, Tetra Pak

Talk overview

Thin extrusion-coated low-density polyethylene films play a critical role in aseptic liquid packaging, where the process-induced microstructural orientation strongly influences the mechanical performance. We investigated the evolution of microstructure in films with different initial degrees of crystalline and lamellar orientation during uniaxial and biaxial tensile loading, using small- and wide-angle X-ray scattering. A physically-based material model is employed to describe the deformation-induced structural changes in the amorphous matrix and their contribution to anisotropic mechanical behavior. The constitutive material model is implemented into a finite element framework to simulate biaxial tensile loading.

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