Dynamic Birefringence of High Polymers II
Authors:
- 1 January 1963
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 34 (1) , 80-89
Abstract
The time-dependence of birefringence was investigated in experiments involving relaxation at constant strain, extension at constant rate of strain, and periodically varying strain. The results of constant strain relaxation are calculated from the other two types of experiments using the linear phenomenological theory of birefringence relaxation. Strain-optical coefficient spectra are calculated for a number of low- and high-density polyethylenes and characteristics of the spectra are correlated with sample density. A simple molecular theory is presented. The time-dependence of birefringence is believed to principally arise from the finite relaxation time for crystal orientation.Keywords
This publication has 11 references indexed in Scilit:
- Rhe-Optical Properties of Polymers. III. Dynamic Polarized Light ScatteringJournal of Applied Physics, 1963
- The dynamic birefringence of high polymersJournal of Polymer Science, 1962
- Light Scattering Study of the Annealing of Drawn PolyethyleneJournal of Applied Physics, 1961
- Use of a Tensile Testing Machine for the Determination of Stress and Strain-Optical CoefficientsReview of Scientific Instruments, 1961
- The measurement of dynamic birefringenceJournal of Polymer Science, 1961
- Photographic Light Scattering by Polyethylene FilmsJournal of Applied Physics, 1960
- The X‐ray diffraction, birefringence, and infrared dichroism of stretched polyethylene. II. Generalized uniaxial crystal orientationJournal of Polymer Science, 1958
- The x‐ray diffraction, birefringence, and infrared dichroism of stretched polyethyleneJournal of Polymer Science, 1956
- Viscoelastic behavior of polyisobutylene under constant rates of elongationJournal of Polymer Science, 1956
- The polarizabilities of carbon—carbon bondsTransactions of the Faraday Society, 1954