Encapsulation of ZnO nanoparticles in POSS for robust anti-photofading coatings on dyed fabrics
Researchers found that ZnO@POSS nanoparticles create robust anti-photofading coatings on dyed polyester fabrics.
As an excellent UV absorber, zinc oxide nanoparticles (ZnO Nps) are limited applications in anti-photofading coating fields due to the high photocatalytic degradation activity, which can accelerate dyed fabrics fading. Herein, a “core-shell” shaped composite nanoparticles with high UV absorption and low photocatalytic degradation properties were successfully fabricated by encapsulating ZnO Nps in polyhedral oligomeric silsesquioxane (POSS) via the alkaline hydrolysis method, and then the POSS coated ZnO Nps (ZnO@POSS Nps) were applied as UV absorber to improve the photostability of dyed polyester fabrics. Field emission scanning electron microscope, Fourier transform infrared spectroscopy and X-ray diffraction analysis confirmed the strong relevance between the POSS shell thickness and micromorphology and structural interface characteristics of “core-shell” shaped ZnO@POSS Nps.
Event Tip: EC Conference Bio-based & Water-based Coatings 2024
Unlock the future of sustainable coatings at the EC Conference Bio-based & Water-based Coatings 2024! This conference serves as a focal point for scientists and experts in bio-based, water-based coatings, and sustainability. Join us on November 5th – 6th, 2024, in Cologne, Germany, for a deep dive into the latest advancements, breakthroughs, and trends.
Connect with leading experts, researchers, and industry leaders who will share invaluable insights and knowledge. The conference provides a unique platform for networking, enabling you to ask questions and engage with the right people in the field.
Hurry and take advantage of the early bird ticket offer available until September 3rd! Don’t miss this opportunity to secure your spot at the forefront of bio-based and water-based coatings technology! Register now!
The UV–Vis absorption spectrum of ZnO@POSS Nps and C. I. Red 2 degradation experiments indicated when the mole ratio of ZnO to vinyl trimethoxy silane was 1:0.25, ZnO@POSS Nps maintained high comparative UV absorption performance (65.4 %) and restrained the photocatalytic degradation efficiency from 62.0 % to 8.9 % comparing with ZnO Nps. The photostability of fabrics was significantly improved by the presence of ZnO@POSS Nps in the coatings that the color difference values of all three dyed fabrics exposed to strong UV light for 72 h were decreased from 2.62, 2.29, and 3.04 to 1.17, 1.09, and 1.52, respectively. This work presents an effective and simple way to restrain the photocatalysis activity of ZnO Nps and enhance the anti-photofading property of dyed fabrics.
Source: Progress in Organic Coatings, Volume 185, December 2023, 107888
