Characterization and optimization of an inkjet-printed smart textile UV-sensor cured with UV-LED light

S. Seipel, J. Yu, A. P. Periyasamy, M. Viková, M. Vik, V. A. Nierstrasz

Research output: Contribution to journalConference articleScientificpeer-review

8 Citations (Scopus)

Abstract

For the development of niche products like smart textiles and other functional high-end products, resource-saving production processes are needed. Niche products only require small batches, which makes their production with traditional textile production techniques time-consuming and costly. To achieve a profitable production, as well as to further foster innovation, flexible and integrated production techniques are a requirement. Both digital inkjet printing and UV-light curing contribute to a flexible, resource-efficient, energy-saving and therewith economic production of smart textiles. In this article, a smart textile UV-sensor is printed using a piezoelectric drop-on-demand printhead and cured with a UV-LED lamp. The UVcurable ink system is based on free radical polymerization and the integrated UVsensing material is a photochromic dye, Reversacol Ruby Red. The combination of two photoactive compounds, for which UV-light is both the curer and the activator, challenges two processes: polymer crosslinking of the resin and color performance of the photochromic dye. Differential scanning calorimetry (DSC) is used to characterize the curing efficiency of the prints. Color measurements are made to determine the influence of degree of polymer crosslinking on the developed color intensities, as well as coloration and decoloration rates of the photochromic prints. Optimized functionality of the textile UV-sensor is found using different belt speeds and lamp intensities during the curing process.

Original languageEnglish
Article number072023
JournalIOP Conference Series: Materials Science and Engineering
Volume254
Issue number7
DOIs
Publication statusPublished - 8 Nov 2017
MoE publication typeA4 Article in a conference publication
EventWorld Textile Conference - Corfu, Greece
Duration: 29 May 201731 May 2017
Conference number: 17

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