Engineering Fully Organic and Biodegradable Superhydrophobic Materials,Advanced Materials Interfaces

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Engineering Fully Organic and Biodegradable Superhydrophobic Materials
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-10-08 , DOI: 10.1002/admi.201801202
Athanasios Milionis ₁ , Chander Shekhar Sharma ₁ , Raoul Hopf ₂ , Michael Uggowitzer ₁ , Ilker S. Bayer ₃ , Dimos Poulikakos ₁

Affiliation

The development of fully organic (cellulose/wax based), biodegradable, and hierarchically textured superhydrophobic material, inspired by natural, self‐cleaning plants, like the Lotus leaf is reported. The developed material can reproduce in a controllable and artificial manner the chemical composition and material properties of these natural surfaces. At the same time, the fabrication protocol described here enables realization of properties beyond the ones found in the natural leaves, by allowing facile tuning of the topographical and mechanical properties. The surface topography consists of a micropillar structure assembly with, to the best of the authors' knowledge, the highest to date reported aspect ratio (7.6) for cellulose materials. Additionally, control and tunability of the material's mechanical properties are also demonstrated, which is rendered softer (down to 227 MPa Young's modulus from 997 MPa base value) by adding glycerol as a natural plasticizer. Finally, the self‐cleaning properties are demonstrated and the biodegradability of the material is evaluated in a period of ≈3 months, which confirms full biodegradation. Additionally, water drop and jet impact, and folding tests demonstrate that the material can reasonably sustain its wettability properties. Such a truly bioinspired and biodegradable material system could find potential use in various bioengineering applications.

中文翻译：

工程完全有机和可生物降解的超疏水材料

据报道，受天然，自清洁植物（如荷叶）的启发，开发了完全有机的（纤维素/蜡基），可生物降解的，层次结构化的超疏水材料。显影的材料可以以可控的和人工的方式复制这些天然表面的化学组成和材料特性。同时，此处所述的制造协议通过允许轻松调整地形和机械特性，可以实现超出天然叶子中的特性的特性。据作者所知，表面形貌由微柱结构组装组成，据报道，纤维素材料的纵横比最高（7.6）。此外，还演示了材料机械性能的控制和可调性，通过添加甘油作为天然增塑剂，可使其变得更软（从997 MPa基本值降至227 MPa杨氏模量）。最后，证明了其自清洁性能，并在约3个月的时间内对材料的生物降解性进行了评估，这证实了其完全的生物降解性。另外，水滴和喷射冲击以及折叠测试表明该材料可以合理地维持其润湿性。这种真正具有生物启发性和可生物降解性的材料系统可以在各种生物工程应用中找到潜在的用途。这证实了完全的生物降解。此外，水滴和喷射冲击以及折叠测试表明，该材料可以合理地保持其润湿性。这种真正具有生物启发性和可生物降解性的材料系统可以在各种生物工程应用中找到潜在的用途。这证实了完全的生物降解。另外，水滴和喷射冲击以及折叠测试表明该材料可以合理地维持其润湿性。这种真正具有生物启发性和可生物降解性的材料系统可以在各种生物工程应用中找到潜在的用途。

更新日期：2018-10-08

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