Effect of Janus Particle Concentration on Water-repellent Finish of Textile Fabric
Abstract : Poly(ethylene terephthalate) (PET) fabric surface was modified with Janus Particles for water repellency property. Janus Particles were characterized with zetapotential measurement, fluorescent microscopy and X-ray photoelectron spectroscopy. The hydrophilic part of Janus particles bound to activated polyester surface and hydrophobic part of Janus faced the environment. The wetting and morphology of modified polyester surface were investigated with scanning electronic microscope and DAT 1100-FIBRO System and DAT 1129 Tilt Table. It was found that with the increase of concentration of Janus particles, modified surface showed higher water contact angle and lower tilt angle. From surface morphology it was also noticed that higher concentration of Janus particles gave raspberry like aggregations on modified filament surface. Finally it was demonstrated that 20 wt. % of Janus particles was very efficient for the design of water repellent textile.