Mechanical relaxations in polyethylene
- 1 September 1969
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science, Part B
- Vol. 3 (3) , 445-494
- https://doi.org/10.1080/00222346908217102
Abstract
The viscoelastic relaxation processes in polyethylene have been studied over a wide range of frequencies. Measurements were made on isotropic and oriented specimens of both low- and high-density polyethylene. Two types of relaxation process have been identified. These are a process which corresponds to shear on planes containing the c-axes of the crystallites and an interlamellar shear process which relates to the morphological structure. It is shown that the present results are consistent with those of previous investigators and that all existing data can be satisfactorily interpreted on the basis of the two proposed mechanisms.Keywords
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