Bulletin of the American Physical Society
APS March Meeting 2013
Volume 58, Number 1
Monday–Friday, March 18–22, 2013; Baltimore, Maryland
Session Z11: Invited Session: Nonlinear Mechanics of Glassy Polymers
11:15 AM–2:15 PM,
Friday, March 22, 2013
Sponsoring Unit: DPOLY
Chair: Robert Hoy, University of South Florida
Abstract ID: BAPS.2013.MAR.Z11.3
Abstract: Z11.00003 : Can intrachain contributions dominate the stress response of polymer glasses under large deformation?
12:27 PM–1:03 PM
(University of Akron)
Polymer glasses are a structural hybrid in their mechanical responses to large deformation. The primary structure due to the short-range inter-segmental van der Waals bonds yields at small strains. In presence of chain connectivity, brittle failure may be avoided if the chain networking is adequately dense. We show in this presentation how the interplay between the primary structure and chain network dictates deformation, yielding, strain softening, strain localization and ``strain hardening'' during continuous uniaxial extension at room temperature of a variety of polymer glasses from the brittle (e.g., PS, PMMA) to the ductile (e.g., PC). In particular, our results identify straining of the chain network as the dominant contribution to the mechanical stress in the post-yield regimes.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2013.MAR.Z11.3
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