於鋁合金基板上製備超疏水及超親水表面

Fabrication of Superhydrophobic and Superhydrophilic Surfaces on Aluminum Alloy Substrates

林鈺唯(Yu-Wei Lin)

指導教授 ： 王志逢

義守大學/理工學院/材料科學與工程學系/碩士(2014年)

https://doi.org/10.6343/ISU.2014.00256

摘要

自然界中許多動物及植物有著自清潔及異向性潤濕的表面，例如：竹葉、稻米葉子、天堂鳥花的葉面等，我們從例子中取得靈感，用人工的方式去製作疏水表面。本實驗利用鹽酸蝕刻鋁合金試片，使試片形成微奈米等級粗糙表面，再以含氟改質劑浸泡，增加表面的疏水性，使水滴在表面各方向皆能輕易滾動，製作出仿自然界之超疏水表面，接著利用鋼片於試片表面壓出不同形式的溝槽，實驗發現溝槽兩側為超疏水特性，而溝槽則為親水性，所以水滴能沿著溝槽流動。為了增加溝槽的親水性質，於溝槽中填入Polyvinylpyrrolidone(PVP)親水高分子改質，以增加吸附水能力，分別探討不同水滴大小於平行及垂直溝槽方向上，水滴角與滾動角的變化，以及其持久性及耐用性，本實驗之製作方式簡單、設備簡便、成本低廉、能大面積及大量生產，並可應用於流量閥、微流體生物傳感器、液滴傳輸、自清潔表面及微型反應器。

關鍵字

超疏水 ； 異向性潤濕 ； 鋁合金

並列摘要

Superhydrophobic surfaces have attracted much interest because of the potential applications in many industrial processes as well as in daily life. Generally, the wettability of a solid surface depends upon two factors: its chemical compositions and its topographical microstructures. The superhydrophobic surfaces with anisotropic wettability have also drawn a great amount of attention recently.
In this paper, we prepared superhydrophobic surfaces on Al alloys. A designed path line is created on the prepared superhydrophobic surface. We achieved both static anisotropic wettabilities and dynamic anisotropic wettabilities on the patterned superhydrophobic surface. The micro-liter droplets move spontaneously toward a preset route on our patterned superhydrophobic surface. The patterned superhydrophobic surfaces can also be used to merge, mix, capture, and transport liquid drops. Furthermore, the use of commercially available raw materials and the simple fabrication process makes it possible to apply such surfaces industrial applications.

並列關鍵字

none

參考文獻

[28]. 李銘峯、許芳文、吳秉翰、蘇信嘉、曹宏熙、胡杰，“利用飛秒雷射微奈米加工技術於玻片上製作高深寬比之微流道結構”，科學與工程技術期刊，第5卷，2009年，第49-55頁。

[1]. W. Lee, M.-K. Jin, W.-C. Yoo and J.-K. Lee, “Nanostructuring of a Polymeric Substrate with Well-Defined Nanometer-Scale Topography and Tailored Surface Wettability”, Langmuir, vol.20, Aug.2004, pp.7665-7669.

[2]. T. Sun, L. Feng, X. Gao and L. Jiang, “Bioinspired Surfaces with Special Wettability”, Accounts of Chemical Research, vol.38, Aug.2005, pp.644-652.

[3]. T. Sun, G. Wang, L. Feng, B. Liu, Y. Ma, L. Jiang and D. Zhu, “Reversible switching between superhydrophilicity and superhydrophobicity”, Angewandte Chemie International Edition, vol.43, Jan.2004, pp.357-360.

[5]. W. Barthlott and C. Neinhuis, “Purity of the sacred lotus, or escape from contamination in biological surfaces”, Planta, vol.202, 1997, pp.1-8.