AI Article Synopsis
- The study investigates how the nonlinear slip behavior of a PDMS polymer melt changes over time when in contact with a specific type of surface.
- It was found that the shear rate at which the PDMS melt transitions to nonlinear slip increases as time progresses.
- The results suggest that this change in slip behavior is due to the slow adsorption of the melt chains on the surface, as explained by a model proposed by Brochard-de Gennes.
Article Abstract
The evolution over time of the nonlinear slip behavior of a polydimethylsiloxane (PDMS) polymer melt on a weakly adsorbing surface made of short non-entangled PDMS chains densely end-grafted to the surface of a fused silica prism has been measured. The critical shear rate at which the melt enters the nonlinear slip regime has been shown to increase with time. The adsorption kinetics of the melt on the same surface has been determined independently using ellipsometry. We show that the evolution of slip can be explained by the slow adsorption of melt chains using the Brochard-de Gennes's model.
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| http://dx.doi.org/10.1140/epje/i2018-11697-4 | DOI Listing |
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