Abstract
This paper presented a novel preparation method of silica coated organic pigment. In this approach, the surfaces of the organic pigment were first orderly modified by poly(sodium 4-styrenesulfonate) (PSS) and poly(diallyldimethylammonium chloride) (PDADMAC), then coated by silica via sol-gel process of tetraethylorthosilicate (TEOS). The results showed that PVP, pH value, water and TEOS contents had significant influence on the morphology of the silica encapsulated organic pigment. Organic pigments coated silica by this approach could scatter UV ray with wavelength less than 270 nm, and this scattering property increased with more silica coated.
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Yuan, J., Zhou, S., Gu, G. et al. Encapsulation of Organic Pigment Particles with Silica via Sol-Gel Process. J Sol-Gel Sci Technol 36, 265–274 (2005). https://doi.org/10.1007/s10971-005-4063-5
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DOI: https://doi.org/10.1007/s10971-005-4063-5