Publications [#342453] of Stephen L Craig

Journal Articles

1. Wang, S; Panyukov, S; Rubinstein, M; Craig, SL, Quantitative Adjustment to the Molecular Energy Parameter in the Lake-Thomas Theory of Polymer Fracture Energy, Macromolecules, vol. 52 no. 7 (April, 2019), pp. 2772-2777 [doi]
   (last updated on 2026/01/17)

   Abstract:
   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.