合成植物角质层涂层作为结构着色纤维素薄膜的仿生防潮膜
Synthetic Plant Cuticle Coating as a Biomimetic Moisture Barrier Membrane for Structurally Colored Cellulose Films
中文简介
基于纤维素纳米晶体 (CNC) 的光子薄膜是传感器、结构彩色辐射冷却和虹彩涂层的可持续候选材料。这种基于 CNC 的薄膜具有螺旋纳米结构,可以根据入射光的偏振进行选择性反射。然而,由于 CNC 的吸湿性,结构有色材料会发生变化,并可能在高相对湿度下发生不可逆转的损坏。因此,在此类环境中防潮是必不可少的。在这项工作中,基于 CNC 的吸湿薄膜受到仿生合成植物角质层的保护;真实植物已经采用的策略。保护性角质层在一定程度上改变了反射颜色,但更重要的是,它们显着降低了水蒸气渗透率两个数量级以上,从 2.1 × 107(原始 CNC/GLU 薄膜)至 12.3 × 10 4 g µm m −2 day −1 atm −1(受保护的 CNC/GLU 薄膜)。这显着扩展了 CNC/GLU 薄膜在高相对湿度下的操作时间窗口。
英文摘要(原文)
Photonic films based on cellulose nanocrystals (CNCs) are sustainable candidates for sensors, structurally colored radiative cooling, and iridescent coatings. Such CNC-based films possess a helicoidal nanoarchitecture, which gives selective reflection with the polarization of the incident light. However, due to the hygroscopic nature of CNCs, the structural colored material changes and may be irreversibly
题录(GB/T 7714)
Anusuyadevi P R, Singha S, Banerjee D, 等. Synthetic Plant Cuticle Coating as a Biomimetic Moisture Barrier Membrane for Structurally Colored Cellulose Films[J]. Advanced Materials Interfaces, 2023, 10(7). DOI: 10.1002/admi.202202112.
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