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首页> 外文期刊>Polymers for advanced technologies >Bioinspired preparation of regular dual‐level micropillars on polypropylene surfaces with robust hydrophobicity inspired by green bristlegrass leaves
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Bioinspired preparation of regular dual‐level micropillars on polypropylene surfaces with robust hydrophobicity inspired by green bristlegrass leaves

机译：Bioinspired在聚丙烯表面上具有稳健的疏水性的常规双层微米的制备，受到绿色Bristlegrass叶的强壮疏水性

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摘要

> The fine microstructure on the natural green bristlegrass leaf of Setaria viridis (L.) Beauv, which exhibits a contact angle (CA) of 155°±2° and a rolling angle (RA) of 79°±2°, is carefully observed. Based on the understanding of the underlying mechanisms for superhydrophobicity and moderate surface adhesion, an efficient replica molding strategy is proposed for mimicking the microstructures on green bristlegrass leaf surface to polypropylene (PP) surfaces. The bioinspired PP replica with dual‐level micropillars are molded by using the unitized template of steel Meshes A and B. Interestingly, the PP replica inherits both hydrophobicity and adhesion of the natural leaf. Furthermore, the PP replica can stabilize its hydrophobic state under a 980 Pa external pressure, which is attributed to the composite Cassie‐Wenzel mixed wetting state on the microstructured interface. The CA comparatively goes down and RA increases, resulting in superhydrophobic surface with moderate adhesion on the bioinspired surface. Hence, the microstructures and hydrophobicity are successfully replicated to the PP surface by only using the low cost, available and reliable steel meshes in the bioinspired replica molding process.
机译： > 自然绿色扁桃叶片上的微观结构 濑户血小骑士 （L.）BeaUV，其具有155°±2°的接触角（CA）和79°±2°的滚动角（Ra），经过仔细观察到79°±2°。基于对超疏水性和中等表面粘合的潜在机制的理解，提出了一种有效的复制模塑策略，用于将绿色吹叶叶片表面上的微观结构模仿到聚丙烯（PP）表面。通过使用钢网啮合A和B的单元化模板，使用双层微硅的BioInspired PP复制品模制。有趣的是，PP复制品含有天然叶的疏水性和粘附性。此外，PP复制品可以在980Pa外部压力下稳定其疏水状态，这归因于微结构界面上的复合卡丝 - 温革混合润湿状态。 CA相对较低，RA增加，导致超疏水表面，在生物悬浮的表面上具有中度粘附性。因此，通过使用Bioinspired Repica模制过程中的低成本，可靠可靠的钢网成功地复制到PP表面的微观结构和疏水性。

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