Stick-Slip transition of polymer solutions on polymer brushes
From rheology it is known that entangled polymer melts or solutions do not obey the stick boundary condition at a solid wall when exposed to high shear stress. This may display an interfacial stick-slip transition (SST) where the apparent flow rate jumps discontinuously due to a massive wall slip. Although this phenomenon is frequently observed in polymer tribology and several theoretical models exist to describe it, a direct experimental observation of its origin is still lacking. In our experiment we will use in situ shear neutron reflectometry to record the theoretically proposed structural change during SST.
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KOROLKOVAS Airidas; Franz. A. Adlmann; AKGUN Bulent; BARRAT Jean Louis; Dennison, A.J.C.; GUTFREUND Philipp and WOLFF Maximilian. (2014). Stick-Slip transition of polymer solutions on polymer brushes. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1683
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