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http://dx.doi.org/10.9713/kcer.2011.49.5.535

Effect of Colloidal Silica on the Photochromic Properties of Hard Coating Films Prepared by Sol-Gel Method  

Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University)
Lee, Min Ji (Department of Chemical and Biochemical Engineering, Konyang University)
Cho, Kyung Sook (Department of Chemical and Biochemical Engineering, Konyang University)
Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
Publication Information
Korean Chemical Engineering Research / v.49, no.5, 2011 , pp. 535-540 More about this Journal
Abstract
Organic-inorganic hybrid coating solutions were prepared starting from colloidal silica, lanthanum nitrate and ${\gamma}$-glycidoxypropyl trimethoxysilane by the sol-gel method. Also, spiropyran-doped hard coating solutions were prepared by mixing the spiropyran solution, obtained after dissolving spiropyran dye into tetrahydrofuran solvent, with the organic-inorgnic hybrid coating solutions. The spiropyran-doped hard coating solutions were applied as a thin layer to polycarbonate sheets, and their photochromic properties were investigated. The effect of amount of colloidal silica added into the coating solutions was investigated on the photochromic properties of coating films. Both decoloration rate and pencil hardness of the coating films were increased with increasing the amounts of colloidal silica.
Keywords
Photochromic; Sol-Gel; Organic-Inorganic Hybrid; Spiropyran; Colloidal Silica; Hard Coating Films;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Pardoa, R., Zayata, M. and Levy, D., "Effect of the Chemical Environment on the Light-Induced Degradation of a Photochromic Dye in Ormosil Thin Films," J. Photochem. Photobiol. A: Chem., 198(2), 232-236(2008).   DOI   ScienceOn
2 Mennig, M., Fries, K., Lindenstruth, M. and Schmidt, H., "Development of Fast Switching Photochromic Coatings on Transparent Plastics and Lens," Thin Solid Films, 351(1), 230- 234(1999).   DOI   ScienceOn
3 Kim, D. H., Shin, Y. T., Lee, J. Y., Hong, W., Lee, B. S. and Song, K. C., "Effect of Solvents on the Photochromic Properties of Spiropyran in Hard Coating Films Prepared by Sol-Gel Method," Korean Chem. Eng. Res. (HWAHAK KONGHAK), 47(4), 430-435 (2009).
4 Jeong, S. H., Cho, K. I., Park, J. Y. and Song, K. C., "Photochromic Properties of Spiropyran in Hard Coating Films Made by Sol-Gel Method," Korean Chem. Eng. Res. (HWAHAK KONGHAK), 46(2), 310-315(2008).
5 Irie, M. and Takami, S., "Photochromism of Dithiazolylethenes Having Pyridyl and N-methylpyridinium Groups," J. Phys. Org. Chem, 20(11), 894-899(2007).   DOI   ScienceOn
6 Pardo, R., Zayat, M. and Levy, D., "Photostability of a Photochromic Naphthopyran Dye in Different Sol-Gel Prepared Ormosil Coatings," J. Sol-Gel Sci. Techn., 40(2), 365-370(2006).   DOI
7 Hou, L., Schmidt, H., Hoffmann, B. and Mennig, M., "Enhancement of the Photochromic Performance of Spirooxazine in Sol- Gel Derived Organic-Inorganic Hybrid Matrices by Additives," J. Sol-Gel Sci. Techn., 8(1), 927-929(1997).
8 ASTM D 3359, "Standard Test Methods for Measuring Adhesion by Tape Test," ASTM International., 927-929(1997).
9 Zayat, M. and Levy, D., "Photochromic Naphthopyrans in Sol- Gel Ormosil Coatings," J. Mater. Chem., 13(2), 727-730(2003).   DOI   ScienceOn
10 Jeong, S. H., Cho, K. I. and Song, K. C., "Preparation of Photochromic Coating Films Containing Spiropyran by Sol-Gel Method," Korean Chem. Eng. Res. (HWAHAK KONGHAK), 46(1), 112-117 (2008).