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Inkjet printing and UV-LED curing of photochromic dyes for functional and smart textile applications
University of Borås, Faculty of Textiles, Engineering and Business. (Textile Material Technology)ORCID iD: 0000-0002-7090-8511
University of Borås, Faculty of Textiles, Engineering and Business. (Textile Material Technology)ORCID iD: 0000-0002-1008-1313
Technical University of Liberec. (Material Engineering)
Technical University of Liberec. (Material Engineering)
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2018 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 8, no 50, p. 28395-28404Article in journal (Refereed) Published
Sustainable development
In my opinion, the content of this publication falls within the area of sustainable development.
Abstract [en]

Health concerns as a result of harmful UV-rays drive the development of UV-sensors of different kinds. In this research, a UV-responsive smart textile is produced by inkjet printing and UV-LED curing of a specifically designed photochromic ink on PET fabric. This paper focuses on tuning and characterizing the colour performance of a photochromic dye embedded in a UV-curable ink resin. The influence of industrial fabrication parameters on the crosslinking density of the UV-resin and hence on the colour kinetics is investigated. A lower crosslinking density of the UV-resin increases the kinetic switching speed of the photochromic dye molecules upon isomerization. By introducing an extended kinetic model, which defines rate constants kcolouration, kdecayand kdecolouration, the colour performance of photochromic textiles can be predicted. Fabrication parameters present a flexible and fast alternative to polymer conjugation to control kinetics of photochromic dyes in a resin. In particular, industrial fabrication parameters during printing and curing of the photochromic ink are used to set the colour yield, colouration/decolouration rates and the durability, which are important characteristics towards the development of a UV-sensor for smart textile applications.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2018. Vol. 8, no 50, p. 28395-28404
Keywords [en]
inkjet printing, UV curing, photochromic, smart textile, functional textile
National Category
Engineering and Technology Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
URN: urn:nbn:se:hb:diva-14901DOI: 10.1039/C8RA05856COAI: oai:DiVA.org:hb-14901DiVA, id: diva2:1237370
Available from: 2018-08-08 Created: 2018-08-08 Last updated: 2018-08-08Bibliographically approved

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Seipel, SinaYu, JunchunNierstrasz, Vincent
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