Nonlinear dynamics and the problem of polymer fracture

The results of the experimental and molecular‐dynamics study of the process of mechanical degradation of polymer chain, testifying to the essential role of nonthermal channels of dissipation of elastic energy accumulated during deformation, have been discussed. High‐energy molecular products of mech...

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Bibliographic Details
Published in:Journal of applied polymer science 1990-06, Vol.39 (11-12), p.2245-2258
Main Authors: Manevitch, L. I., Zarkhin, L. S., Enikolopian, N. S.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical properties
Physical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
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Summary:The results of the experimental and molecular‐dynamics study of the process of mechanical degradation of polymer chain, testifying to the essential role of nonthermal channels of dissipation of elastic energy accumulated during deformation, have been discussed. High‐energy molecular products of mechanical degradation, which are able to induce a chain branching process leading to “explosive” formation of submicrocrackes, have been discovered. It has been noted that a considerable part of polymer chain energy is concentrated in localized excitations of a soliton type, which play the determining role at all the stages of mechanical degradation under consideration.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1990.070391105