Nonlinear mechanics of thermoreversibly associating dendrimer glasses
Abstract
We model the mechanics of associating trivalent dendrimer network glasses with a focus on their energy dissipation properties. Various combinations of sticky bond (SB) strength and kinetics are employed. The toughness (work-to-fracture) of these systems displays a surprising deformation-protocol dependence; different association parameters optimize different properties. In particular, "strong, slow" SBs optimize strength, while "weak, fast" SBs optimize ductility via self-healing during deformation. We relate these observations to breaking, reformation, and partner-switching of SBs during deformation. These studies point the way to creating associating-polymer network glasses with tailorable mechanical properties.
Keywords
Cite
@article{arxiv.1308.1317,
title = {Nonlinear mechanics of thermoreversibly associating dendrimer glasses},
author = {Arvind Srikanth and Robert S. Hoy and Berend C. Rinderspacher and Jan W. Andzelm},
journal= {arXiv preprint arXiv:1308.1317},
year = {2015}
}
Comments
8 pages, 7 figures, submitted to J. Chem. Phys