A Journey along the linear viscoelasticity of binary networks from entangled polymers towards their nonlinear rheology
(2017) Final SUPOLEN conference, , — Location: Crete
Files
Supolenmeeting-2017-Crete.pdf
Restricted Access - Adobe PDF
- 2.23 MB
Details
- Authors
Taghipour, Hamid 
- Abstract
- We report on recent progress made on linear rheology of binary entangled polymers towards their nonlinear transient response. Such well-characterized model systems have been paid attention for more than two decades to probe the elastic instabilities of industrial polymers during the processing. Our main goal is to provide insight on the non-linear shear rheology of binary entangled polymer chains. More specific, we would like to identify the molecular origin of the stress overshoot as well as to thoroughly understand how chain retraction and disentanglement are influenced by the deformation rate and the chain topology (e.g. linear or star chains). In this presentation, we first outline the theoretical framework for understanding the observed linear and nonlinear rheological behavior of such polymeric systems. To do so, we use three different models based on general coarse-grained approaches. Finally we compare our predictions with experimental findings and comment on the performance of the models; we also highlight similarities and/or differences, which we explain in terms of the underlying molecular physics and the way the latter have been implemented in the models.
- Affiliations
Citations
Taghipour, H. (2017). A Journey along the linear viscoelasticity of binary networks from entangled polymers towards their nonlinear rheology. https://hdl.handle.net/2078.5/55280