Figure 10: Kinetic monitoring of infrared spectra in the region of the principal modes of vibration of the BSA (by 1500-1600 cm-1) for the functionalized surface of TiO2 (Sr.CaP. nT-TiO2 (30% Sr)) for pH = 4.5 (a) and pH = 7 (b). Remark phosphate P-O vibration disappearance when BSA adsorbs for neutral pH. Each kinetic presents the IR spectra for immersion time of 5s, 10s, 20s, 30s, 60s and 120s (bottom to top).