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).
CITATION STYLE
Seipel, S., Yu, J., Periyasamy, A. P., Viková, M., Vik, M., & Nierstrasz, V. A. (2017). Resource-efficient production of a smart textile uv sensor using photochromic dyes: Characterization and optimization. In Narrow and Smart Textiles (pp. 251–257). Springer International Publishing. https://doi.org/10.1007/978-3-319-69050-6_22
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