Encapsulation of UV Sensitive Substances in Polymer Particles and Related Coating Applications

Protection from ultraviolet (UV) radiation is an important requirement for many products, such as pharmaceuticals, natural dyes, cars, and outdoor equipment. UV protective particles can be used to resist UV degradation by combining physical blocking and chemical absorption. Using spontaneous emulsion and homogenization methods, PMMA particles are synthesized containing the UV sensitive substance and protective materials (antioxidants). Various parameters are tested to optimize yield, entrapment efficiency, and particle homogeneity. Novel methods are being developed to coat the polymer nanoparticles on surfaces such as glass, cotton and polyester. UV/VIS spectrophotometry and microscopy image analysis reveal that a coating agent is required for UV protective nanoparticles to adhere to surfaces. Particle applications will continue to be tested using various coating agents, including PMMA and PLGA, as well as different UV sensitive substances to determine the effectiveness of UV protective particles and their potential use in industry.