Quantitative Adjustment to the Molecular Energy Parameter in the Lake-Thomas Theory of Polymer Fracture Energy

Journal Article (Journal Article)

We present a conceptual framework for adding molecular details of chain extension and force-coupled bond dissociation to the Lake-Thomas model of tear energy in rubbery crack propagation. Incorporating data reported from single-molecule force spectroscopy experiments provides an estimate for the stored energy per bond at fracture of ∼60 kJ mol-1 for typical hydrocarbon polymers, well below the typical carbon-carbon bond dissociation energy in these systems. Opportunities to test and exploit the role of molecular extension and covalent bond scission in experimental systems are proposed.

Full Text

Duke Authors

Cited Authors

  • Wang, S; Panyukov, S; Rubinstein, M; Craig, SL

Published Date

  • April 9, 2019

Published In

Volume / Issue

  • 52 / 7

Start / End Page

  • 2772 - 2777

Electronic International Standard Serial Number (EISSN)

  • 1520-5835

International Standard Serial Number (ISSN)

  • 0024-9297

Digital Object Identifier (DOI)

  • 10.1021/acs.macromol.8b02341

Citation Source

  • Scopus