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Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-5301-740x
University of Borås, Faculty of Textiles, Engineering and Business.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.
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2019 (English)Conference paper, Published paper (Other academic)
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
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.

Place, publisher, year, edition, pages
United Kingdom, 2019. Vol. 459, p. 1-8, article id 012026
Keywords [en]
Supercritical CO2 (scCO2), dyeing, Polyester, Photochromic, Spirooxazine, Naphthopyran
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
URN: urn:nbn:se:hb:diva-15312DOI: 10.1088/1757-899X/459/1/012026OAI: oai:DiVA.org:hb-15312DiVA, id: diva2:1263217
Conference
Aegean International Textile and Advanced Engineering Conference AΙTAE 2018, Lasvos, Greece, September 5-7, 2018
Projects
SMDTexAvailable from: 2018-11-14 Created: 2018-11-14 Last updated: 2019-01-09Bibliographically approved

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fulltext(934 kB)61 downloads
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Publisher's full texthttp://stacks.iop.org/1757-899X/459/i=1/a=012026

Authority records BETA

Tadesse Abate, MollaSeipel, SinaNierstrasz, Vincent

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CiteExportLink to record
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Citation style
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