Elastoviscous Properties of Amorphous Polymers in the Transition Region. II. Stress-Relaxation of Butadiene-Styrene Copolymers
- 1 September 1954
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 25 (9) , 1092-1097
- https://doi.org/10.1063/1.1721820
Abstract
Experimental data have been obtained on the stress-relaxation modulus Er(t) of several copolymers in their transition regions. The new data are expressed as master curves which can be fitted to the Gauss Error Integral form of reduced equation, as previously proposed. It appears possible to characterize the time and temperature-dependence of Er of amorphous polymers in general by means of the parameters of this equation: E1 (glassy-state modulus), E2 (rubbery-state modulus), Td (distinctive temperature, related to second-order transition temperature), Kd (characteristic relaxation time at Td), and h (parameter related to steepness of master curve). In the butadiene-styrene series, the effect of composition on these parameters has been determined.This publication has 5 references indexed in Scilit:
- Ideal copolymers and the second‐order transitions of synthetic rubbers. i. non‐crystalline copolymersJournal of Chemical Technology & Biotechnology, 1952
- Elastoviscous Properties of Amorphous Polymers in the Transition Region. IJournal of the American Chemical Society, 1952
- Refractometric determination of second‐order transition temperatures in polymers. V. Determination of the refractive indices of elastomers at temperatures from 25 to −120°CJournal of Polymer Science, 1950
- Refractometric determination of second‐order transition temperatures in polymers. II. Some acrylic, vinyl halide, and styrene polymersJournal of Polymer Science, 1948
- Über innere und äußere Weichmachung von makromolekularen StoffenAngewandte Chemie, 1940