TITLE

Structural basis for the yield stress in plastic disperse systems

AUTHOR(S)
Marangoni, Alejandro G.; Rogers, Michael A.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3239
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The apparent yield stress is a fundamental rheological characteristic of a plastic material. In this work, we propose a model that relates the structure of a fractal particle network to its yield stress. The model predicts the yield stress to be a function of particle size, solid-liquid surface free energy, the amount of network material, and the fractal dimension of the network. The predicted yield stress corresponded to the stress at the limit of linearity in fat crystal networks. Moreover, a structural definition for the yield stress is proposed.
ACCESSION #
9697724

 

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