鱼鳞和荷叶模仿，可拉伸和耐用的多层合成<a href="#fn1" title="可用的电子补充信息（ESI）：电影1–6演示了荷叶上的水流反弹（在空中）和珠状油滴（在水下）在鱼鳞上滚动，并且在鱼鳞上模拟了多层涂层在发生拉伸变形之前和之后并遭受严重的物理磨损。图S1-S12显示了氨基石墨烯氧化物的详细特征（FTIR，SEM，拉曼光谱等），超疏水多层涂层中亚稳态捕集空气的存在，多层涂层的拉伸变形对包埋鱼的影响鳞/荷叶启发的润湿性，各种物理操作对自然启发的多层涂层的影响，各种严重物理磨损的影响，化学暴露和紫外线对鱼鳞和荷叶启发的多层涂层的影响，能够显示各种性质的与基材无关的多层涂料激发了持久的可湿性。参见DOI：10.1039 / c8ta04984j">†</a>,Journal of Materials Chemistry A

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鱼鳞和荷叶模仿，可拉伸和耐用的多层合成 †
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-07-17 00:00:00 , DOI: 10.1039/c8ta04984j
Avijit Das _{1,

2,

3} , Shreyasi Sengupta _{1,

2,

3} , Jumi Deka _{1,

2,

3} , Adil Majeed Rather _{1,

2,

3} , Kalyan Raidongia _{1,

2,

3} , Uttam Manna _{1,

2,

3}

Affiliation

通常，通过采用单独的合成工艺来开发与特定物理和化学参数相关的自然界启发性的水（空气中的荷叶模拟空气中的超疏水性）和油（鱼类鳞状的超疏水性）与特定的物理和化学参数相关联的界面。但是，基本地形和化学成分的轻微扰动可能会对这两种受自然界启发的人工湿润岩造成永久性损害。在本文中，两种明显不同的纳米材料-柔性氧化石墨烯纳米片（具有接枝的伯胺部分）和胺反应性聚合物纳米复合物（具有残留的丙烯酸酯基团）通过1进行共价和策略性整合采用鱼鳞片和荷叶片启发的4-共轭加成反应，具有``可拉伸''和持久的润湿性，能够维持：（a）较大的拉伸变形（100％）多次（500倍），以及（b）严重的物理/化学暴露-包括聚合物涂层的物理腐蚀，长时间暴露于极端pH值，盐度，紫外线辐射，物理操作等。这两种不同的纳米材料的共价结合提供了一种简单的方法来采用适当的形貌和必要的化学功能，赋予持久的超疏水性和水下超疏油性。即使在拉伸物理损坏的多层界面之后，合成的仿生界面仍保持拒水拒油性能。这种耐用的材料沉积在各种基材上，因此，对于在实际相关的苛刻应用中的各种预期应用将具有潜在的意义。此外，在文献中，很少有报道提供通过持久的和可拉伸的性质激发出超疏水性（在空气中）和超疏油性（在水下）的这种单一化学方法。

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Synthesis of fish scale and lotus leaf mimicking, stretchable and durable multilayers†

In general, nature inspired water (lotus leaf mimicking superhydrophobicity in air) and oil (fish scale-inspired superoleophobicity under water) repellent interfaces that are associated with specific physical and chemical parameters, are developed by adopting separate synthesis processes. However, a slight perturbation of the essential topography and chemistry is likely to cause permanent damage to these two distinct nature inspired artificial wettabilites. In this paper, two distinctly characteristic nanomaterials—flexible graphene oxide nanosheets (with grafted primary amine moieties) and amine reactive polymeric nanocomplexes (with residual acrylate groups), are covalently and strategically integrated through a 1,4-conjugate addition reaction for adopting both the fish scale- and lotus leaf inspired ‘stretchable’ and durable wettability that is capable of sustaining: (a) large tensile deformation (100%) multiple times (500 times), and, (b) severe physical/chemical exposures—including physical erosion of the polymeric coating, prolonged exposure to extremes of pH, salinity, ultraviolet radiation, physical manipulations, and so on. The covalent integration of these two different nanomaterials provided a single and simple method for adopting appropriate topography and essential chemical functionality that conferred durable superhydrophobicity and underwater superoleophobicity. The synthesized bio-mimicking interfaces remained water/oil repellent even after stretching the physically damaged multilayer interfaces. Such a durable material is deposited on various substrates, and thus, would be of potential interest for diverse prospective applications in practically relevant harsh applications. Furthermore, there are very few reports of such a single chemical approach that provided durable and stretchable nature inspired superhydrophobicity (in air) and superoleophobicity (under water), in the literature.

更新日期：2018-07-17

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