The commercial grade polyacrylic latex was modified in order to prepare a self-cleaning coating. TiO2/Agexchanged-zeolite-A
nanocomposite was prepared and used as additive in the matrix of polyacrylic latex
to achieve a hydrophilic and photocatalytic coating. FTIR and UV–visible spectroscopy, X-ray diffraction
patterns and FESEM were used to characterize the composition and structure of the nanocomposites
and coatings. The acrylic coatings, were prepared by using of TiO2/Ag-exchanged-zeolite-A additive,
had better UV and visible light absorption, hydrophilic, degradation of organic pollutants, stability in
water and antimicrobial properties than pristine commercial grade polyacrylic latex coating. According
to the results, the modified polyacrylic based coating containing 0.5 wt% of TiO2/Ag-exchanged-zeolite-A
nanocomposite additive with TiO2 to Ag-exchanged-zeolite-A ratio of 1:2 was the best coating considering
most of useful properties such as small band gap and low water contact angle. The water contact
angle for unmodified polyacrylic latex coating was 68◦ which was decreased to less than 10◦ in modified
coating after 24 h LED lamp illumination.