Abstract
Niche products like smart textiles and other technical high-end products require resource-efficient processes and small batches contrary to conventional textile processes that require larger batches and are water-, chemical- and energy-intensive. This study focuses on digital inkjet printing and UV light curing as a flexible and resource-efficient and therewith economic production process of a smart textile UV sensor. The UV sensor is based on a UV-curable inkjet ink and a commercial photochromic dye. The inkjet ink is cured via free radical polymerization initiated by a UV–LED lamp. This system contains two photoactive compounds for which UV light both cures and activates the prints. An important challenge is therefore polymer crosslinking of the resin and UV-sensing performance of the photochromic dye. In this paper, we present performance as a function of belt speed and lamp intensity during curing. Via wash tests, we investigate the durability of the photochromic prints. The UV-sensing textile is characterized by colour measurements, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA).
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Acknowledgements
The authors gratefully acknowledge the support of Borås Stad, Sparbankstifelsen Sjuhärad, TEKO (The Swedish Textile and Clothing Industries Association) and SST (Stiftelsen Svensk Textilforskning) for enabling this research.
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Seipel, S., Yu, J., Periyasamy, A.P., Viková, M., Vik, M., Nierstrasz, V.A. (2018). Resource-Efficient Production of a Smart Textile UV Sensor Using Photochromic Dyes: Characterization and Optimization. In: Kyosev, Y., Mahltig, B., Schwarz-Pfeiffer, A. (eds) Narrow and Smart Textiles. Springer, Cham. https://doi.org/10.1007/978-3-319-69050-6_22
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DOI: https://doi.org/10.1007/978-3-319-69050-6_22
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