Structural colors are environmentally beneficial as they originate from the physical structure of the material, and they cannot be imitated by chemical dyes and are free from photo-bleaching. In this study, structurally colored wood was prepared by building a structurally colored film based on a wood substrate. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform-infrared (FT-IR). The angel-dependent optical effects were confirmed by comparing the CIE chromatic coordinates over a range of viewing angles. Through octadecyltrichlorosilane (OTS) treatment, the sample surface was made hydrophobic and had a water contact angle of 139°, which broadens the range of applications for the material. Thermal gravimetric analysis results showed that the thermal stability of the modified structurally colored wood (MCW) was much better than that of pristine wood. The reflectance spectra and the model room test results demonstrated that the MCW possesses the reflective heat insulation ability. The unique and promising properties of the MCW could potentially be applied in buildings, furniture, and for energy conservation.

中文翻译：

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具有反射隔热和疏水性的结构彩色木复合材料

结构色对环境有益，因为它们源自材料的物理结构，化学染料无法模仿，也不会发生光漂白。在这项研究中，通过构建基于木材基材的结构着色薄膜来制备结构着色木材。制备的样品通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和傅里叶变换红外 (FT-IR) 进行表征。通过在一定视角范围内比较 CIE 色度坐标，证实了与角度相关的光学效应。通过十八烷基三氯硅烷（OTS）处理，使样品表面疏水化，水接触角为139°，拓宽了材料的应用范围。热重分析结果表明，改性结构着色木材（MCW）的热稳定性明显优于原始木材。反射光谱和样板房测试结果表明，MCW具有反射隔热能力。MCW 的独特和有前途的特性有可能应用于建筑、家具和节能。