Rheological Properties of Bare and Grafted Nanoparticle Polymer Networks

This study investigates the rheological properties of crosslinked poly(methyl methacrylate) (PMMA) composites with bare and grafted nanoparticle constituents. We will present the influence of crosslinking density and particle loading on linear rheological properties of PMMA networks. These results will be compared with the PMMA-grafted particles in crosslinked PMMA matrices. Effects of including the short linear chains into crosslinked composites of bare and grafted nanoparticles will be discussed. Topological constraints of crosslinked matrix will be compared to the crosslinked grafted nanoparticles to understand the addition of free chains and entanglements in these two different system networks.