National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering , Soochow University , Suzhou 215123 , China.
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics , Chinese Academy of Sciences , Shanghai 200083 , China.
ACS Nano. 2018 Apr 24;12(4):3095-3102. doi: 10.1021/acsnano.7b08259. Epub 2018 Feb 15.
Artificial structural colors based on short-range-ordered amorphous photonic structures (APSs) have attracted great scientific and industrial interest in recent years. However, the previously reported methods of self-assembling colloidal nanoparticles lack fine control of the APS coating and fixation on substrates and poorly realize three-dimensional (3D) conformal coatings for objects with irregular or highly curved surfaces. In this paper, atomization deposition of silica colloidal nanoparticles with poly(vinyl alcohol) as the additive is proposed to solve the above problems. By finely controlling the thicknesses of APS coatings, additive mixing of noniridescent structural colors is easily realized. Based on the intrinsic omnidirectional feature of atomization, a one-step 3D homogeneous conformal coating is also readily realized on various irregular or highly curved surfaces, including papers, resins, metal plates, ceramics, and flexible silk fabrics. The vivid coatings on silk fabrics by atomization deposition possess robust mechanical properties, which are confirmed by rubbing and laundering tests, showing great potential in developing an environmentally friendly coloring technique in the textile industry.
基于短程有序非晶光子结构 (APS) 的人工结构色近年来引起了科学界和工业界的极大兴趣。然而，先前报道的胶体纳米粒子自组装方法缺乏对 APS 涂层的精细控制和对基底的固定，并且难以实现对具有不规则或高度弯曲表面的物体的三维 (3D) 共形涂层。在本文中，提出了使用聚(乙烯醇)作为添加剂的二氧化硅胶体纳米粒子雾化沉积来解决上述问题。通过精细控制 APS 涂层的厚度，容易实现非闪光结构颜色的添加剂混合。基于雾化的固有各向同性特征，还可以在各种不规则或高度弯曲的表面（包括纸张、树脂、金属板、陶瓷和柔性丝绸织物）上轻松实现一步 3D 均匀共形涂层。通过雾化沉积在丝绸织物上形成的鲜艳涂层具有强大的机械性能，通过摩擦和洗涤测试得到证实，这在开发纺织工业中环保的着色技术方面具有巨大的潜力。
