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    Digital inkjet functionalization of water-repellent textile for smart textile application

    Year: 2018

    Journal: J. Mater. Sci., Volume 53, SEP, page 13216–13229

    Authors: Yu, Junchun; Seipel, Sina; Nierstrasz, Vincent A.

    Organizations: CROSSTEXNET, Digifun project; KK Stiftelsen (The Knowledge Foundation) [20150040]; TEKO (The Swedish Textile and Clothing Industries Association); SST Stiftelsen (The foundation for Swedish Textile Research); Sparbanksstiftelsen Sjuharad; Myfab; Boras stad

    Digital inkjet printing is a production technology with high potential in resource efficient processes, which features both flexibility and productivity. In this research, waterborne, fluorocarbon-free ink containing polysiloxane in the form of micro-emulsion is formulated for the application of water-repellent sports- and work wear. The physicochemical properties of the ink such as surface tension, rheological properties and particle size are characterized, and thereafter inkjet printed as solid square pattern (10 x 10 cm) on polyester and polyamide 66 fabrics. The water contact angle (WCA) of the functional surfaces is increased from < 90A degrees to ca. 140A degrees after 10 inkjet printing passes. Moreover, the functional surface shows resistance to wash and abrasion. The WCA of functional surfaces is between 130A degrees and 140A degrees after 10 wash cycles, and is ca. 140A degrees after 20000 revolutions of rubbing. The differences in construction of the textile as well as ink-filament interaction attribute to the different transportation behaviors of the ink on the textile, reflected in the durability of the functional layer on the textile. The functionalized textile preserves its key textile feature such as softness and breathability. Inkjet printing shows large potential in high-end applications such as customized functionalization of textiles in the domain of smart textiles.
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