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 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. -1

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