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Photochromic fabrics from hybrid silica surface coatings
conference contribution
posted on 2010-01-01, 00:00 authored by Marzieh ParhizkarMarzieh Parhizkar, T Cheng, Xungai Wang, Tong LinIn this study, hybrid silica prepared by a sol-gel technique and doped with a photochromic dye was used to produce photochromic coatings on fabric surfaces. The coated fabrics showed a strong photochromic effect with very fast optical response speed. Good coating adhesion was obtained on wool fabrics. The photostability of the photochromic fabrics was improved by three different processes: adding a photo stabilizer, adjusting the surface wettability and sealing off the dye-containing pores with additional silica coating. Four UV stabilizers were added separately to the photochromic silica coatings to investigate their influence on the photostability and photochromic behaviour. The addition of UV stabilizers retarded the photochromic response and reduced photochromic absorption, but increased photochromic lifetime. Among the four UV stabilizers studied, the quencher resulted in the best improvement to the photostability with minimal reduction in the photochromic absorption. Increasing the hydrophobicity of the coating, and sealing-off the dye-containing pores were also found to improve photostability.
History
Event
Australasian Chemical Engineering Conference (40th : 2010 : Adelaide, South Australia)Pagination
1 - 3Publisher
Engineers AustraliaLocation
Adelaide, S.A.Place of publication
[Barton, ACT]Start date
2010-09-26End date
2010-09-29ISBN-13
9780858259713Language
engPublication classification
E1 Full written paper - refereedCopyright notice
2010, Engineers AustraliaEditor/Contributor(s)
M BiggsTitle of proceedings
Chemeca 2010 : Proceedings of the 40th Australasian Chemical Engineering ConferenceUsage metrics
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