Transient forces and non-equilibrium states in sheared polymer networks

Sprakel, Joris; Padding, J.T.; Briels, Wim J.

Transient forces and non-equilibrium states in sheared polymer networks

Journal article (2011)

Authors

Joris Sprakel Harvard University

J.T. Padding Université Catholique de Louvain

Wim J. Briels University of Maryland, University of Twente

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Published Date

2011

Language

English

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Abstract

The response of many soft materials to external fields is dominated by transient forces, which arise from memory of the configurations the system has undergone in the past. Using large-scale particle-based simulations we show that these transient forces lead to a rich non-equilibrium behavior in networks of soft polymeric particles or polymer-engrafted colloids. We compute the diagram of states for an experimental system of network-forming associative polymers and show viscoelastic instabilities such as shear banding, melt fracture and a shear-induced disorder-order transition.