Does anybody know any articles about experimental (!) investigations of (dens) polymer brushes in shear flow? I need 'shear rate' vs 'brush height' data, or something comparable to test a theory.
We have a paper that appeared just a couple of weeks ago using in which we use brushes (or 'whiskers') made from paint brushes to indiucate shear and strain in a viscous flow. My coauthors also have an earlier paper referred to in this one. These are not polymers but might be considered larger visible version of the same? However, I do not know of any good data on alignment versus time or shear rate. Not sure what you mean by 'brush height'. There might be something in the literature on rigid cylinders in very viscous shear flow, but polymers probably cannot be traeted as rigid. Anyway, have a glance at:
Druken, K. A., Kincaid, C. and Griffiths, R. W. Directions of seismic anisotropy in laboratory models of mantle plumes. 2013. Geophys. Res. Lett. 40, 3544-3549, doi:10.1002/grl.50671.
I realize this response isn't timely, but review my thesis (full document online) and some of my published papers. There are hundreds of references related to experimental methods and theories on how brush height will be impacted by shear. I have some experimental data and I site others experimental data as well. You can also compare your theory with some simulation results we developed.
Is it interesting for you the results for polymer brushes (comb-like, grafted, hairy- polymers) in solutions or for polymer melts? We studied Flow birefringence for comb-like and grafted polymers with different structures in dilute solutions.
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