Preparation and Ordered Self-Assembly of Nano-Pd-Ga/PMMA by Ultrasonic

Abstract

Nano-Ga-Pd/poly methyl methacrylate (PMMA) composite materials were prepared with the palladium chloride solution containing metal gallium, MMA as monomer, and sodium dodecyl sulfate (SDS) as emulsifier without initiatoror reducer. Pd, Ga, andGa5Pdphase in PMMA matrix were identified by XRD. The characteristic absorption peak at 200 nm for nano-Ga/PMMA polymer solution, at 209 nm for nano-Pd/PMMA polymer solution were proved by UV-Vis; the binding energy changes of O1s, Ga2p3, Ga2d, and Pd3d were characterized by means of X-ray photoelectron spectroscopy. It is concluded that nano-Ga5Pdwas produced based on segment electronics shifting from Gallium to Palladium, and coordination was formed on segment electronics from Gallium to oxygen of PMMA ester group. The anisotropism ordered assembly of PMMA around nano-Ga-Pd particles were illuminated by transmission electron microscopy; it is further interpreted that nano Ga-Pd particles had ordered-assembly induced effect.

Internal Friction of Polymer Composites with Nanosilicas Fabricated by Ultraviolet Irradiation

“…Nanosized silica is a very useful reinforcement of thermoplastic and thermosetting polymers if it can be dispersed well in polymer matrices [6][7][8][9]. However, the structure complex of the multicomponents of the composite polymers increases the insufficiency for understanding the relationships of microstructures and components with dynamical properties of polymer composites containing nanometer-scale fillers.…”