| 花生叶表面的高黏附超疏水特性研究及其仿生制备 |
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| 引用本文： | 邱宇辰,刘克松,江雷.花生叶表面的高黏附超疏水特性研究及其仿生制备[J].中国科学:化学,2011(2):403-408. |
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| 作者姓名： | 邱宇辰 刘克松 江雷 |
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| 作者单位： | 北京航空航天大学化学与环境学院;东北师范大学附属中学;中国科学院化学研究所; |
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| 基金项目： | 国家重点基础研究发展计划(2007CB936400); 国家自然科学基金(20920102036,20974113,21001013); 高等学校博士学科点专项科研基金; 中央高校基本科研业务费专项资金资助 |
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| 摘 要： | 花生是一种常见的豆科作物.与低黏附超疏水的荷叶不同,花生叶表面同时具有超疏水和高黏附特性.水滴在花生叶表面的接触角为151±2°,显示出超疏水特性.此外,水滴可以牢固地附着在花生叶表面,将花生叶翻转90°甚至180°,水滴均不会从表面滚落,显示了良好的黏附性(黏附力超过80μN).研究发现,花生叶表面呈现微纳米多级结构,丘陵状微米结构表面具有无规则排列的纳米结构.花生叶表面特殊的微纳米多尺度结构是其表面呈现高黏附超疏水特性的关键因素.结合实验数据,对花生叶表面特殊浸润性机理进行了简要阐述.受此启发,利用聚二甲基硅氧烷复形得到了与花生叶表面微结构类似的高黏附疏水表面.本文以期为仿生制备高黏附超疏水表面提供新思路.
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| 关 键 词： | 仿生 受生物启发 超疏水 高黏附 花生叶 |
Peanut leaves with high adhesive superhydrophobicity and their biomimetic materials |
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| QIU YuChen,LIU KeSong & JIANG Lei, School of Chemistry , Environment,Beijing University of Aeronautics & Astronautics,Beijing ,China Institute of Chemistry,Chinese Academy of Sciences,Beijing ,China.Peanut leaves with high adhesive superhydrophobicity and their biomimetic materials[J].Scientia Sinica Chimica,2011(2):403-408. |
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| Authors: | QIU YuChen LIU KeSong & JIANG Lei School of Chemistry Environment Beijing University of Aeronautics & Astronautics Beijing China Institute of Chemistry Chinese Academy of Sciences Beijing China |
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| Affiliation: | QIU YuChen1,LIU KeSong1 & JIANG Lei1,2 1 School of Chemistry and Environment,Beijing University of Aeronautics & Astronautics,Beijing 100191,China 2 Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China |
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| Abstract: | Peanut is a common legume.It is found that peanut leaves exhibit both superhydrophobicity and a high adhesive force with water,which is different from the lotus leaves with low adhesive superhydrophobicity.The water contact angle on peanut leaves is 151±2°.Furthermore,the water droplet does not slide on the peanut leaves surfaces when the surface is tilted at 90° or even upside down,indicating a high adhesive force to water（more than 80 μN）.Micro-and nanoscale hierarchical structures are present on the surfaces of peanut leaves,where the hill-like microstructures are covered by nanostructures in a random distribution.In combination with the experimental results,the wettability mechanism of peanut leaves is also presented in this paper.Micro-and nanoscale hierarchical structures play a critical role in the formation of superhydrophobic and high adhesive surfaces.Inspired by peanut leaves,artificial surfaces with both hydrophobicity and a high adhesive force with water are fabricated by duplicating peanut leaf surface microstructures using polydimethylsiloxane.We expect this research may provie an inspiration for the biomimetic construction of superhydrophobic materials with a high adhesive force. |
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| Keywords: | biomimetic bio-inspired superhydrophobicity high adhesion peanut leaf |
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