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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/98399

    Title: Preparation and characterization of spironaphthooxazine/polyacrylate photochromic hard coatings on plastic substrates
    Authors: Chang, Chao-Ching;Wang, Chih-Shing;Chen, Yu-Chen;Cheng, Liao-Ping
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Photochromic;Coatings;Spirooxazine;Polyacrylate
    Date: 2014-06-01
    Issue Date: 2014-07-29 14:22:54 (UTC+8)
    Publisher: Taiwan: Tamkang University Press
    Abstract: Optical coatings exhibiting photochromic effects were prepared by UV-curing of a coating formulation that incorporates a hexa-functional monomer, DPHA, and an organic dye, spironaphthooxazine. Spectroscopic studies of the coatings indicated efficient photochromic activities in response to UV irradiation. The depth of color and the rate of bleaching at 610 nm were found to depend on the UV dosage and the dye content; specifically, the transmittance returned from 42 to 82% and from 38 to 67% in 60 s. for the coating containing 3.7 wt% dye that received 0.45 and 3.6 of J/cm2 of UV exposure, respectively. Furthermore, the coatings were very hard (7H, pencil hardness) and adhered perfectly (100%, peel test) on poly (methyl methacrylate) substrates.
    Relation: Journal of Applied Science and Engineering 17(2), pp.167-174
    DOI: 10.6180/jase.2014.17.2.07
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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