THE LOW ANGLE LIGHT SCATTERING OF POLYTETRA-FLUOROETHYLENE FILMS
Abstract
Low-angle light scattering patterns from polyethylene and polytetrafluoroethylene (PTFE) using V sub v polarization (parallel polarization and analyzer) and H sub v polarization (crossed polarizer and analyzer) are presented. The difference in appearance is evident and is interpretable in terms of morphological differences between these 2 polymers. Attempts are made to interpret the PTFE scattering pattern and relate it to the known morphology of PTFE. Experimental evidence indicated that the scattering entities are aggregates of the crystals in which the crystals are arrayed at a preferred angle with respect to the direction of maximum extension of the aggregate. Patterns obtained with stretched PTFE films are consistent with the orientation of the aggregate with its longest dimension lying along the stretching direction accompanied by a decrease in the angle between the aggregate axis and the principal polarizability direction.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 24, 1962
- Accession Number
- AD0277406
Entities
People
- Marion B. Rhodes
- Richard S. Stein
Organizations
- University of Massachusetts Amherst