Hydrogen bond dynamics at the glass transition
Soft Condensed Matter
2021-11-02 v6 Disordered Systems and Neural Networks
Abstract
The glass transition in hydrogen-bonded glass formers differs from the glass transition in other glass formers. The Eshelby rearrangements of the highly viscous flow are superimposed by strongly asymmetric hydrogen bond rupture processes, responsible for the excess wing. Their influence on the shear relaxation spectrum is strong in glycerol and close to zero in PPE, reflecting the strength of the hydrogen bond contribution to the high frequency shear modulus. A recent theory of the highly viscous flow enables a quantitative common description of the relaxation spectra in shear, linear and non-linear dielectrics, and heat capacity.
Keywords
Cite
@article{arxiv.2105.06392,
title = {Hydrogen bond dynamics at the glass transition},
author = {U. Buchenau},
journal= {arXiv preprint arXiv:2105.06392},
year = {2021}
}
Comments
4 pages, 3 figures; Supplement 5 pages, 6 figures