Syndiotactic Polystyrene （SPS） has excellent electrical properties, and is expected to be applied to high-frequency circuit boards. We made a study of the formation of a metal layer on a smooth surface of SPS resin through a continuous plasma sputtering process, and examined the effects of the crystallinity of SPS resin and the addition of styrene-ethylenbutylene-styrene （SEBS） on peel strength. We also investigated the mechanism behind increased peel strength using FTIR analysis, XPS analysis, TEM observation and EDS analysis. It was confirmed that a conductive layer with practical peel strength was formed on the smooth surface of SPS resin material, which has low crystallinity and contains a right amount of SEBS as a result of continuous plasma sputtering. It was concluded that new components generated on the surface of SPS material just after plasma treatment, and the existence of metal-resin mixed layer at the interface, contributed to the improvement of peel strength.
For corrosion-resistant layer formation, a method using only hot water under atmospheric pressure has been developed. A corrosion-resistant layer was obtained with shot peening treatment using sodium bicarbonate media as a pre-process that is activation by formation of plastic strain on the surface.
Coloring of anodized aluminum（alumite）with organic pigment was investigated. After alumite was prepared by anodic oxidation of aluminum in oxalic acid solution, pore-widening was done with oxalic acid solution at 323 K（50 ℃）. Then iron or nickel metal was deposited electrochemically in pores. Pigment particles dispersed by surfactant with an azobenzene moiety（AZPEG）were deposited in the pores by reduction of AZPEG with iron and nickel.