Figure 12

IR spectra of (a) sodium stearate, (b) the modified TiO2, (c) the modified barite and (d) the TiO2-coated barite composite pigments.

IR spectra of (a) sodium stearate, (b) the modified TiO2, (c) the modified barite and (d) the TiO2-coated barite composite pigments.