Preparation and self-assembly of photonic crystals on polyester fabrics

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• 作者：Hui Zhang ; Xiaoyan Liu
• 关键词：Photonic crystals ; SiO2 microspheres ; Vertical deposition ; Self ; assembly ; Fabric
• 刊名：Iranian Polymer Journal
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：26
• 期：2
• 页码：107-114
• 全文大小：
• 刊物主题：Polymer Sciences; Ceramics, Glass, Composites, Natural Materials;
• 出版者：Springer Berlin Heidelberg
• ISSN：1735-5265
• 卷排序：26

文摘

Photonic crystals play the vital role in structural color appearance, and they can be fabricated on polymer substrates. In this paper, monodispersed SiO₂ microspheres with the average diameter ranging from 150 to 300 nm were prepared by classical Stöber method. The spherical size of SiO₂ microspheres was regulated by controlling concentrations of ammonia. The tunable structural colors could be changed by modulating the diameters of SiO₂ microspheres or viewing angles, which adhered to the law of the Bragg diffraction. As a kind of polymer fabric, the polyester fabrics, smoother than natural fiber fabrics, exhibited bright structural colors from the well-ordered photonic crystal microstructure by vertical deposition self-assembly of SiO₂ photonic crystals. Moreover, the result indicated that the difference of fabric-woven structure could affect the lightness of structure color, and the lightness on satin fabric was duller than that of plain fabric. Besides, we have also discussed the influence of fabric structure on the lightness of structure color using the theory of thin film interference. It is believed that the structural color could provide a new strategy for related polymer product coloration without chemical dyes and pigments, and has a potential to reduce the pollution in related polymer materials dyeing and printing processes.