[18a-M_123-1~13] 12.2 Characterization and Materials Physics

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-M_123-11] Surface properties and interfacial adhesion strength of phosphonic acid derivatives coated aluminum

〇(B)Sora Ouchi¹, Kumpei Kobori¹, Takayuki Miyamae¹ (1.Chiba Univ.)

Keywords:

adhesion,vibrational spectroscopy,surface/interface

We investigated the surface adsorption molecular properties and the adhesion mechanism with epoxy adhesives of aluminum coated with phosphonic acid derivatives ODPA, HHPA, and HUPA. As shown in the SFG spectra, peak positions of CH bands on the surface of phosphonic acid derivatives in contact with various solvents were red-shifted based on the peak position of CH at the air interface. This suggests that dispersion interactions are at work on the surface of the phosphonic acid derivatives. Similarly, When the surface of the phosphonic acid derivative was exposed to a solvent, the peak position of the OH band was red-shifted relative to the peak position of OH at air interface. This suggests that the phosphonic acid derivatives with hydroxyl groups at the carbon chain end may have an adhesive mechanism based on acid-base interactions.