Katagiri Kiyofumi, Uemura Kensuke, Uesugi Ryo, Inumaru Kei, Seki Takahiro, Takeoka Yukikazu
Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering Furo-cho, Chikusa-ku Nagoya 464-8603 Japan
RSC Adv. 2018 Mar 16;8(20):10776-10784. doi: 10.1039/c8ra01215f.
In recent years, colloidal arrays of submicrometer-sized monodisperse particles used as structurally colored coatings have drawn great attention due to their non-bleaching properties and low impact on human health and the environment. In this paper, structurally colored coating films were fabricated using monodisperse SiO particles the cathodic electrophoretic deposition (EPD) technique. The addition of a strong polycation, poly(diallyldimethylammonium chloride) (PDDA), enables the cathodic EPD of SiO particles and carbon black (CB) additives. Optimizing the quantities of PDDA and CB results in the appearance of vivid structural color from the coating films. The arrangement of the particle array is controllable by varying the pH of the water added to the coating sols for EPD. Structurally colored coating films with and without iridescence, , angular dependence, can be fabricated on demand by a simple operation of the EPD process. In addition, the coating film prepared by cathodic EPD displayed high abrasion resistance because PDDA acts not only as a charge control agent but also as a binder.
近年来,用作结构色涂层的亚微米级单分散颗粒的胶体阵列因其不褪色特性以及对人类健康和环境的低影响而备受关注。在本文中,使用单分散SiO颗粒通过阴极电泳沉积(EPD)技术制备了结构色涂膜。添加强聚阳离子聚二烯丙基二甲基氯化铵(PDDA)可实现SiO颗粒和炭黑(CB)添加剂的阴极EPD。优化PDDA和CB的用量会使涂膜呈现出鲜艳的结构色。通过改变添加到用于EPD的涂料溶胶中的水的pH值,可以控制颗粒阵列的排列。通过EPD过程的简单操作,可以按需制备具有和不具有虹彩(即角度依赖性)的结构色涂膜。此外,通过阴极EPD制备的涂膜显示出高耐磨性,因为PDDA不仅充当电荷控制剂,还充当粘合剂。