Ding Fuchuan, Liu Jingjing, Zeng Songshan, Xia Yan, Wells Kacie M, Nieh Mu-Ping, Sun Luyi
Department of Chemical and Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA.
Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA.
Sci Adv. 2017 Jul 19;3(7):e1701212. doi: 10.1126/sciadv.1701212. eCollection 2017 Jul.
Large-scale biomimetic organic/inorganic hybrid nanocoatings with a nacre-like microstructure were prepared via a facile coassembly process. Different from conventional polymer nanocomposites, these nanocoatings contain a high concentration of nanosheets, which can be well aligned along the substrate surface. Moreover, the nanosheets and polymer matrix can be chemically co-cross-linked. As a result, the nanocoatings exhibit exceptional mechanical properties (high stiffness and strength), barrier properties (to both oxygen and water vapor), and flame retardancy, but they are also highly transparent (maintaining more than 85% of their original transmittance to visible light). The nanocoatings can be applied to various substrates and regular or irregular surfaces (for example, films and foams). Because of their excellent performance and high versatility, these nanocoatings are expected to find widespread application.
通过简便的共组装工艺制备了具有珍珠母状微观结构的大规模仿生有机/无机杂化纳米涂层。与传统的聚合物纳米复合材料不同，这些纳米涂层含有高浓度的纳米片，它们可以沿基材表面良好排列。此外，纳米片和聚合物基体可以进行化学共交联。因此，纳米涂层表现出优异的机械性能（高刚度和强度）、阻隔性能（对氧气和水蒸气）和阻燃性，而且还具有高透明度（对可见光保持超过85%的原始透光率）。该纳米涂层可应用于各种基材以及规则或不规则表面（例如薄膜和泡沫）。由于其优异的性能和高通用性，这些纳米涂层有望得到广泛应用。
