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Published on: October 31, 2019
Liquid-to-solid transition of concentrated suspensions under complex transient shear histories
1Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Advanced Rheology Institute, Shanghai 200240, People's Republic of China.
Abstract:
Suspensions containing noncolloidal aluminum particles in a Newtonian carrier liquid and the effects of shear history on the rheological properties of suspensions are investigated showing a critical concentration phi(c), which is close to the "freezing" packing fraction of spherical particle suspensions. An apparent liquid-to-solid transition was clearly found for suspensions below phi(c) via transient step shear after long shear history as well as via the large amplitude oscillatory shear flow with controlled shear stress. The microstructures or the local flow characteristics of suspensions with phi
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