高等学校化学学报

高等学校化学学报

• 物理化学 • 上一篇    下一篇

霸王鞭和麒麟掌叶片的表面微结构及超疏水性

张诗妍, 高常锐, 狄桓宇, 冯琳   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:2011-07-01 发布日期:2012-02-16
  • 通讯作者: 冯 琳, 女, 博士, 副研究员, 主要从事功能纳米界面材料研究. E-mail:fl@mail.tsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 51173099)和国家重大科学研究计划项目(批准号: 2009CB930602)资助.

Surface Microstructure and Superhydrophobic Abilities of Euphorbia Antiquorum and Euphorbia Neriifolia var. Cristata Leaves

ZHANG Shi-Yan, GAO Chang-Rui, DI Huan-Yu, FENG Lin   

  1. Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2011-07-01 Published:2012-02-16

PDF (PC)

被引次数

24

摘要：

霸王鞭(Euphorbia antiquorum)和麒麟掌(Euphorbia neriifolia var. cristata)是2种特殊的叶片, 正面不疏水而叶片背面超疏水的沙漠植物. 本文通过接触角测试仪、 电子显微镜和表面张力测试仪分别对叶片的超疏水性、 表面微观形貌和表面黏附力进行了测试和表征. 采用模板法, 以聚乙烯醇为模板、 以聚苯乙烯为基底制备仿叶片背面结构的聚苯乙烯薄膜, 并对薄膜表面的超疏水性、 表面微观形貌和表面黏附力进行了测试和表征, 发现这2种叶片背面的平均间距为1~3 μm的层片状微观结构可以构建出具有超疏水高黏附力特性的表面.

关键词: 霸王鞭, 麒麟掌, 超疏水性能, 微观结构

Abstract:

Euphorbia antiquorum and Euphorbia neriifolia var. cristata are desert plants with superhydrophobic abaxial epidermis of leaves and hydrophobic adaxial epidermis of leaves. Using contact angle meter, SEM and surface tension tester, we tested the superhydrophobicity, observed the surface microstructure and mea-sured the surface adhesion of their leaves. We mimicked the microstructure of the leave's surface through the solvent-evaporation-driven nano-imprint pattern transfer process, using polyvinyl alcohol(PVA) as template and polystyrene(PS) as substrate to acquire a PS film. By studying on the superhydrophobicity, surface microstructure and the surface adhesion of the film, we discovered that superhydrophobic and high-adhesive film can be built by lamellar microstructure with an average protrusion distance of 1—3 μm.

Key words: Euphorbia antiquorum, Euphorbia neriifolia var. cristata, Superhydrophobic ability, Microstructure

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