Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.
Department of Laser in Meteorology, Photochemistry & Agriculture, National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt.
Luminescence. 2024 Sep;39(9):e4903. doi: 10.1002/bio.4903.
Smart photochromic and fluorescent textile refers to garments that alter their colorimetric properties in response to external light stimulus. Cotton fibers have been reported as a main resource for many textile and non-textile industries, such as automobiles, medical devices, and furniture applications. Cotton is a natural fiber that is distinguished with breathability, softness, cheapness, and highly absorbent. However, there have been growing demands to find other resources for cotton textiles at high quality and low cost for various applications, such as sensor for harmful ultraviolet radiation. Herein, we present a novel method toward luminescent and photochromic nonwoven textiles from recycled cotton waste. Using the screen-printing technology, a cotton fabric that is both photochromic and fluorescent was developed using aqueous inorganic phosphor nanoparticles (10-18 nm)-containing printing paste. Both CIE Lab color coordinates and photoluminescence spectra showed that the transparent film printed on the nonwoven fabric develops a reversible green emission (519 nm) under ultraviolet light (365 nm), even at low pigment concentration (2%) in the printing paste. Colorfastness of printed fabrics showed high durability and photostability.
智能光致变色和荧光纺织品是指能够对外界光刺激做出颜色变化的服装。棉花纤维一直是许多纺织和非纺织行业的主要原料，如汽车、医疗器械和家具应用。棉花是一种天然纤维，具有透气性、柔软性、廉价性和高吸水性。然而，对于各种应用，如有害紫外线传感器，人们越来越需要寻找其他资源来替代高质量和低成本的棉纺织品。在此，我们提出了一种从回收棉废料中制备发光和光致变色无纺纺织品的新方法。使用丝网印刷技术，开发了一种含有水性无机荧光纳米粒子（10-18nm）的印花浆，制备了光致变色和荧光的棉织物。CIE Lab 色坐标和光致发光光谱都表明，即使在印花浆中颜料浓度（2%）较低的情况下，打印在无纺织物上的透明薄膜在 365nm 的紫外光下也能发出可逆转的绿色发射（519nm）。印花织物的色牢度显示出高耐久性和光稳定性。
