Infusion of the organometallic compound into organic materials using supercritical carbon dioxide

Poly(methyl methacrylate) (PMMA) could be infused with Ti (O-i-C3H7)(4) by supercritical carbon dioxide. Ti(O-i-C3H7)(4) was infused into the surface of PMMA at low temperatures, and diffused into the deep area by increasing the pressure at a constant temperature. It became clear that Ti O-i-C3H7)4 reacts to produce TiO2 (.) XH2O clusters. The diameter of clusters, the thickness of the layer diffusing the cluster, and the area ratio of cross section of the cluster to the unit area of the layer showed maximum values at a near critical temperature, and they became large by increasing the pressure. They were shown to be controlled by the temperature and pressure.