The Structural Changes of Polyethylene Film during Punch Deformation
Keywords:
polyethylene, supermolecular structure, membrane, punch deformation, scanning electron microscopy, X-ray diffraction method.Abstract
An experimental results concerning changes of supermolecular structure of polyethylene membrane during punch deformation process is presented. Disc-shaped specimens from low-density polyethylene film (LDPE) processed by extrusion blowing method were cut out and loaded by steel spherical punch. The scanning electron microscopy (SEM) and X-ray diffraction methods were used in order to investigate polyethylene structure. Changes of crystalline formation are presented in polyethylene membrane in different zones of formed polymeric shell. The dimensions of supermolecular formations and peculiarities of their changes after punch deformation of LDPE film were determined.
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