[17p-D419-1~15] 6.4 Thin films and New materials

▲ [17p-D419-7] Defluorination and Adsorption of Tetrafluoroethylene (TFE) on TiO₂(110) and Cr₃O₃(0001)Defluorination and Adsorption of Tetrafluoroethylene (TFE) on TiO₂(110) and Cr₃O₃(0001)

Jessiel Siaron GUERIBA^1,2, Nur Ellina Annisa SALEHUDDIN^1,3, 〇Wilson Agerico Tan Dino^1,2,3, Kiminori WASHIKA⁴, Hiroshi NAKAMURA⁵, Tatsumi KAWAFUCHI⁴ (1.Osaka Univ., 2.DLSU-Philippines, 3.UKM-Malaysia, 4.Hirotec Co., Ltd., 5.Charmant, Inc.)

Keywords:dissimilar materials, laser joining, polymer-metal joints

The capability to join dissimilar materials is a key enabling technology that allows design engineers to create new structures or parts with tailor engineered properties. For example, a material that exhibits high temperature resistance in one area and good corrosion resistance in another. Some notable examples include polymer-metal composites used in various specialized applications. All of these applications fundamentally start with polymer adhesion on metal surfaces. Recently, we report that metal oxide surfaces catalyze the formation of intermediate defuorinated tetrafuoroethylene (TFE) radicals, resulting in enhanced binding on the corresponding metal oxide surfaces. As expected, reactivity of the corresponding metal oxide surfaces depends on the oxygen coordination of metal surface atoms. Thus, introducing oxygen vacancies and non-ionizing radiations to form intermediate radicals could promote binding of polymers to metals and metal-oxide surfaces, allowing for better materials design. This could find significant applications not only in joining dissimilar materials, but also allow for flexibilities in realizing materials with the desired (pre-determined) characteristic properties. Further details will be presented at the meeting.