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It is demonstrated that the addition of nanoparticles can decrease the viscosity of an entangled polymer matrix (plasticization). While there has been considerable effort in understanding the role of bare nanoparticles on viscosity, the corresponding study on grafted particles is nascent. Two nanometer radius zirconia fillers with a bimodal population of grafted PDMS is used. Two fillers are considered:...
Polymer nanocomposites with polymer grafted nanoparticles (NPs) are of great interest since they have improved properties relative to their unfilled analogs. While it is well-appreciated that nanocomposite flow behavior is critically affected by filler dispersion, the roles of the matrix and the polymeric grafts remain unexplored. We perform linear oscillatory rheology on composites of polystyrene-grafted...
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