A simple model for calculating the fracture process for a single extended-chain molecule such as polyethylene is considered. The model consists of a chain of N coupled Morse oscillators. There exists a critical overall extension below which the fracture is energetically unfavorable but above which fracture is favored both energetically and kinetically. For the critically stretched chain, the activation energy for rupture increases with N. Long chains must be stretched beyond this critical value to fail within experimentally meaningful times.
|Number of pages||17|
|Journal||Journal of polymer science. Part A-2, Polymer physics|
|Publication status||Published - May 1984|
ASJC Scopus subject areas