Effect of Changes in Fine Structure of the Biodegradable Plastics on through Forming Thin Film by Ion Beam Irradiation

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The objective of this study was to construct eco-material devices, in which various biodegradable resins are used as the print circuit board (PCB) material, by ion beam irradiation technology and thin film formation technology. Three different parts were investigated: (1) the effect of a reforming layer formed on the print circuit board surface by ion beam irradiation with various ions on the adhesion between the biodegradable plastics and a metallic thin film, (2) the effect of a microstructural modification of a biodegradable resin print circuit board on its mechanical properties, and (3) enzymatic degradation of a biodegradable resin circuit print board coated with a metallic thin film. Especially, with regard to parts (3), we were currently carrying out experiments to determine the precise hydrolysis and enzymatic degradation behavior of a biodegradable resin board coated with a metallic film. In this report, the results obtained thus were reported.