The effect of annealing on the elastoplastic response of isotactic polypropylene
Materials Science
2007-05-23 v1
Abstract
Four series of tensile loading-unloading tests are performed on isotactic polypropylene in the sub-yield domain of deformations at room temperature. In the first series, injection-molded specimens are used as produced, whereas in the other series the samples are annealed for 24 h at 120, 140 and 160 C, which covers the low-temperature region and an initial part of the high-temperature region of annealing temperatures. A constitutive model is developed for the elastoplastic behavior of a semicrystalline polymer. The stress-strain relations are determined by five adjustable parameters that are found by fitting the experimental data. The effect of annealing is analyzed on the material constants.
Keywords
Cite
@article{arxiv.cond-mat/0205362,
title = {The effect of annealing on the elastoplastic response of isotactic polypropylene},
author = {A. D. Drozdov and J. deC. Christiansen},
journal= {arXiv preprint arXiv:cond-mat/0205362},
year = {2007}
}
Comments
22 pages, 8 figures