A facial microwave-assisted polyol activation process for fabrication of Ni@PMMA microspheres

A simple and efficient activation process was conducted by deposition of palladium (Pd) nanoparticles on PMMA surface using a microwave-assisted polyol method with ethanol used as the reductant. The newly synthesized Pd nanoparticles were utilized as an activator for electroless nickel deposition. TEM images revealed that Pd nanoparticles of size 4–6 nm are formed evenly over the PMMA surface. A tight, smooth and continuous Ni plating layer was coated on these Pd nanoparticle activated PMMA microspheres. In contrast, a rough and discontinuous Ni film was obtained for the sample activated with a conventional sensitization/activation procedure.

Schematic diagram of the electroless plating processes using three different activation procedures.Figure optionsDownload as PowerPoint slideHighlights
► A simple and efficient activation process to deposit Pd nanoparticles on PMMA surface.
► Microwave-assisted polyol method with ethanol used as the reductant.
► This activation method is environmentally friendly and low cost.