Temperature and time relaxation of complex Young's modulus of isotropic and oriented polymers

The experimental temperature and time dependences of real and imaginary com ponents of Young's modulus of isotropic and oriented polymers is analyzed. An attempt to describe them in the region of relaxation transition is under taken with the help of relaxation spectrometry. For this purpose, the distr ibution, function for the relaxation times is approximated by a rectangular distribution. As a result, an approximate formula for the description of t emperature/time relaxation of Young's modulus in the region of relaxation t ransition is derived, suitable for both oriented and isotropic polymers.