studying a new infrared reflective polymer coating

Although, that the solar energy is important for life continuity, there is need to protect large buildings from these radiations in summer and if the buildings are permitted to take these radiations, the cost of cooling will be too much. one of the most effective methods used to solve this problem is to coat buildings with specific pigments that reflect the solar infrared radiation. this work studies a new infrared reflective coating containing carotene pigment. uv-vis spectroscopy results for the films with different concentrations of carotene pigment showed that the reflectance of ir spectrum reaches to 92% while the reflectance in the visible range (400-500 nm) was decreased to 42% by increasing the concentration. the ft-ir results showed the bonds of the polymethylmethacrylate (pmma) and pigment, noted that the transmittance increased for pmma and pigment almost 10% as compared with pure pmma. the containing pmma, indicating that the transmittance increased almost 10% for pigment-containing pmma. the results confirmed that the prepared coatings could reflect uv-vis spectrum. so, they can be used in the protecting the planet from this type of radiation. prog.