Longitudinal acoustic mode in polymers: Applications of the general theory to planar zigzag methylene chains
- 1 October 1977
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 48 (10), 4013-4018
- https://doi.org/10.1063/1.323440
Abstract
The general theory of the longitudinal vibrations of a composite perturbed elastic rod has been applied to the observed LAM frequencies of n‐paraffins, a cyclic paraffin, and polyethylene. The good agreement obtained between observed and calculated results shows that force and mass perturbations at the chain ends have a significant, and non‐negligible, effect on the LAM frequency.Keywords
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