Electron microscopy of banded structures in oriented thermotropic polymers

Research paper by A. M. Donald, A. H. Windle

Indexed on: 01 Apr '83Published on: 01 Apr '83Published in: Journal of Materials Science


Banded microstructures in thermotropic polymers are analysed by transmission electron microscopy. The banded structures are only apparent in dark field and lie normal to the direction of the shear imposed on the sample when above its softening temperature. Dark field micrographs prepared from different regions of the diffraction pattern demonstrate that the structures are associated with the serpentine path of the polymer molecules about the shear direction.