ISSN:
0022-3832
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Ferry's reduction is applicable to amorphous polymers, but there is no reduction corresponding to Ferry's available for crystalline polymers. Here will be proposed a method of reduction based on a simple mechanical model, with the degree of crystallinity and draw ratio as its parameters. Confirmation of this method was attained from the stress relaxation curve of polyethylene for a draw ratio equal to 1. In this case, we have only to use log E + log T0/T - log Λ/(1 + Λ), log t - (ε/k) (1/T - 1/T0) + log T/T0 instead of log E, log t, where, Λ is the degree of crystallinity and ε′ the term corresponding to the activation energy of viscosity. A satisfactory master curve was obtained. The master curve due to frequency change could be obtained in the same way; however, this has not yet been confirmed, there being no appropriate data.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1959.1203813418
