Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F18%3A00006096" target="_blank" >RIV/46747885:24410/18:00006096 - isvavai.cz</a>

Výsledek na webu

<a href="http://stacks.iop.org/1757-899X/459/i=1/a=012026" target="_blank" >http://stacks.iop.org/1757-899X/459/i=1/a=012026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/459/1/012026" target="_blank" >10.1088/1757-899X/459/1/012026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IOP Conf. Series: Materials Science and Engineering 459 (2019) 012026

ISBN

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ISSN

1757-8981

e-ISSN

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Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

IOP Publishing

Místo vydání

United Kingdom

Místo konání akce

Lasvos, Greece

Datum konání akce

1. 1. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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