Tuning mechanical properties of nanocomposites with bimodal polymer bound layers

摘要: We show that a bound layer composed of short and long chains can be exploited to regulate the elastic moduli bulk polymer nanocomposites at same particle loadings dispersion states. The thickness on particles with high coverage is reduced oscillatory deformation in model attractive nanocomposite system. Reversibility is, thus, possible for interphase. Compositional dynamic heterogeneity interphase has subsequent effects fragility composites. With increasing amount adsorbed chains, index systematically improves from moderate values. Our results suggest between free matrix directly governs reinforcement poly(methyl methacrylate)–silica dynamically altered under large shear.