Abstract
The photoelastic effect in γ-irradiated crosslinked polyesters was investigated at various temperatures using the Sénarmont's compensator method with an automatic recording apparatus. The results obtained are following. (1) The change in the photoelastic coefficient is similar to the change in the compliance of irradiated crosslinked polyesters. (2) Little change of the photoelastic coefficient and the compliance was obtaind by irradiation, can be considered that the photoelastic effect is predominantly determined by an instantaneous orientation of the backbone chain. (3) In addition, it is also suggested that new photoelastic materials might be provided by irradiating the polymeric materials with γ-rays.
