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Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide
Högskolan i Borås, Akademin för textil, teknik och ekonomi.ORCID-id: 0000-0002-5301-740x
Högskolan i Borås, Akademin för textil, teknik och ekonomi.ORCID-id: 0000-0002-7090-8511
Department of Material Engineering; Faculty of Textile Engineering; Technical University of Liberec.
Department of Material Engineering; Faculty of Textile Engineering; Technical University of Liberec.
Vise andre og tillknytning
2019 (engelsk)Konferansepaper, Publicerat paper (Annet vitenskapelig)
Hållbar utveckling
Verkets författare anser att innehållet i publikationen faller inom ämnet hållbar utveckling.
Abstract [en]

Photochromic textiles are of considerable interest for smart and functional textile applications due to their remarkable dynamic colour changing effect when irradiated with light of a certain wavelength. The use of resource efficient processes, such as digital inkjet printing and supercritical carbon dioxide (scCO2) dyeing techniques enables an economic production of those high-end functional products with high material costs. In this study, photochromic polyester fabric has been prepared by applying two commercially important photochromic dyes from spirooxazine (SO) and naphthopyran (NP) dye classes using scCO2-dyeing technique. The properties of scCO2 dyed photochromic fabrics were compared with the properties of the same dyes in a non-polar solvent, hexane. UV-Vis spectroscopy and a specially designed online colour measurement system capable of simultaneous UV irradiation and colour measurement were used to evaluate the photochromic colour behaviour. Both photochromic dye types embedded in textile as well as in solution showed significant reversible colour changing properties when exposed to UV light and revert to their original non-coloured form when the UV light is removed. The scCO2 dyed polyester fabrics exhibited similar trends of colour build-up as in solution, while contrasting behaviour was observed in terms of colour changing rates compared to their behaviour in solution.

sted, utgiver, år, opplag, sider
United Kingdom, 2019. Vol. 459, s. 1-8, artikkel-id 012026
Emneord [en]
Supercritical CO2 (scCO2), dyeing, Polyester, Photochromic, Spirooxazine, Naphthopyran
HSV kategori
Forskningsprogram
Textil och mode (generell)
Identifikatorer
URN: urn:nbn:se:hb:diva-15312DOI: 10.1088/1757-899X/459/1/012026OAI: oai:DiVA.org:hb-15312DiVA, id: diva2:1263217
Konferanse
Aegean International Textile and Advanced Engineering Conference AΙTAE 2018, Lasvos, Greece, September 5-7, 2018
Prosjekter
SMDTexTilgjengelig fra: 2018-11-14 Laget: 2018-11-14 Sist oppdatert: 2019-01-09bibliografisk kontrollert

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