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. We discuss issues related to thermalization of plastic flow in the context of soft glassy rheology (SGR) theory. An apparent problem with the theory in its current form is that the stationarity of thermomechanical equilibrium obtained by requiring that its flow rule satisfy detailed balance in the absence of applied deformation requires plastic flow to be athermal. This prevents proper application...
The extent of strain softening controls strain localization and governs the character of the post-yield response of polymer glasses. In order to understand how solid particles affect strain softening in a common glassy polymer, we investigate the composition dependence of the upper (σ y ), lower (σ fl ), and rejuvenated (σ yr ) yield stresses of neat PMMA as well as glass microparticle...
A key factor that limits the practical implementation of polymer gels is low gel toughness. Here, we present coarse-grained molecular dynamics simulations of the effects of solvent molecular weight on the toughness of entangled and non-entangled polymer gels in the ballistic impact regime. Our results demonstrate that higher molecular weight solvents enhance gel toughness, and that mechanical properties...
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