聚苯乙烯/铁-单宁酸配合物微球在棉织物上的结构生色

针对目前基于多巴胺制备结构色织物的过程耗时及成本高的问题,采取单宁酸替代多巴胺快速实现结构色效果,制备了聚苯乙烯/铁-单宁酸配合物(PS/TA-Fe³⁺)微球,并通过重力沉积法在棉织物表面构建无规密堆积的非晶胶体阵列。采用马尔文纳米粒度分析仪、场发射电子显微镜、透射电子显微镜和显微角分辨光谱仪对聚苯乙烯(PS)微球、PS/TA-Fe³⁺微球和结构色织物进行了表征,探究了适宜的单宁酸和Fe³⁺用量,表征了结构色织物表面PS/TA-Fe³⁺微球的排列、结构生色效果及PS/TA-Fe³⁺涂层的结构稳定性。结果表明:当单宁酸用量为10%、单宁酸与Fe³⁺的量比为10:1时,制备的PS/TA-Fe³⁺微球粒径均匀、单分散性较好,结构色织物颜色柔和明亮,不具备角度依赖性,且具有良好的耐洗涤和耐摩擦性能。

Structural coloration of polystyrene/iron-tannin acid complex nanospheres on cotton fabrics

It is known that dopamine structurally colored fabrics is expensive and time-consuming. To address this problem, tannic acid was used in this research to replace dopamine for quickly achieving the structural color effect. PS/iron-tannin acid complex (PS/TA-Fe³⁺) nanospheres was prepared, which was used to construct random close-packed amorphous photonic arrays on the surface of cotton fabrics by gravity deposition. Polystyrene (PS) microspheres, PS/TA-Fe³⁺ nanospheres and structurally colored fabrics was characterized by Malvern nanoparticle size analyzer, field emission electron microscope, transmission electron microscope and angle-resolved spectrometer. The appropriate addition of tannins acid and Fe³⁺ were explored, and the arrangement of PS/TA-Fe³⁺ nanospheres on the surface of structurally colored fabrics, the structural colors and structural stability of PS/TA-Fe³⁺ coatings were characterized. The results show that when the amount of tannic acid is 10% and the molar ratio of tannic acid and Fe³⁺ is 10:1, the prepared PS/TA-Fe³⁺ microspheres appear to have uniform particle size and good mono-dispersity. The prepared fabric displayed soft, bright and angle-independent structural color, demonstrating good washing and rubbing durability.