Abstract
Multifunctional surface coatings hamper the UV/Near-infrared (NIR) radiations and resist ice/fog formation finds ready use in green buildings. Here, aluminium doped ZnO nano pigment (AZO) was synthesized and incorporated into poly(methyl methacrylate) [PMMA] polymer matrix to fabricate AZO/PMMA multilayered coatings on glass surface. Functional properties such as UV absorption, NIR shielding, self-cleaning, surface hardness and scratch resistance were assessed for AZO/PMMA coatings. Results revealed that AZO pigmented PMMA coatings shield UV and IR radiations in the wavelengths 363 and 1100nm, respectively. Al-doping helps to enhance the NIR reflectivity in ZnO pigment. Coatings retain optical transparency only upto 20 layers. Interestingly, AZO/PMMA coated glass surface shows significant surface temperature cut-off upto 8°C even with 7 layers. The coated glass found to have anti-icing property compared to uncoated surfaces when dipping in liquid N2. AZO/PMMA coatings can be an inexpensive interface/interphase layers for multifunctional glass windows.
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