Summary
An activation analysis of relaxational β-transition in polymers, oligomers and simple molecular glasses has been made with the aid of DSC and the internal friction (IF) on the specimens under static load. On the basis of the results obtained, literature data and the correlations found, a conclusion has been drawn that β-transition in the linear polymers is defined by the rotation of the chain portion commensurable with Kuhn's segment as well as the intermolecular potential barriers.
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Bershtein, V.A., Egorov, V.M., Emelyanov, Y.A. et al. The nature of β-relaxation in polymers. Polymer Bulletin 9, 98–105 (1983). https://doi.org/10.1007/BF00275575
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DOI: https://doi.org/10.1007/BF00275575