Sustainable and invisible anti-counterfeiting inks based on waterborne polyurethane and upconversion nanoparticles for leather products

Sustainable and invisible anti-counterfeiting inks based on waterborne polyurethane and upconversion nanoparticles for leather products

Blog Article

Abstract copyright leather products infringe the intellectual property rights of the business, cause enormous economic loss, and negatively influence the business enthusiasm for innovation.However, traditional anti-counterfeiting materials for leather products suffer from complicated fabrication procedures, photobleaching, and Ties high volatile organic compound (VOC) emissions.Here, a sustainable and invisible anti-counterfeiting ink composed of waterborne polyurethane and water-dispersible lanthanide-doped upconversion nanoparticles (UCNPs) featuring ease of preparation, high photostability, non-toxicity, low VOC emissions, and John Lewis JLBIWM1404 Integrated Washing Machine 7kg White A+++ strong adhesion strength for leather products is designed and synthesized.After decorating on the surface of leather products, the obtained patterns are invisible under normal light conditions.

Upon irradiation at 808 nm, the invisible patterns can be observed by naked eyes due to the visible light emitted by 808 nm excited UCNPs.Our approach described here opens a new pathway to realize the long-term, stable anti-counterfeiting function of leather products.Graphical Abstract.