Authors: Yabu, Hiroshi¹; Hirai, Yuji²; Kojima, Miki³; Shimomura, Masatsugu⁴

Source: Journal of Adhesion Science and Technology, Volume 22, Numbers 3-4, 2008 , pp. 277-284(8)

Publisher: VSP, an imprint of Brill

Abstract:

Surface wettability is a significant factor in determining the physical and chemical properties of materials. It is known that both the chemical properties of the surface and its topography play important roles. A honeycomb-structured polymer film can be prepared by casting a hydrophobic polymer solution under humid conditions. Here, we measured water repellency on the honeycomb- and pincushion-structured films of various kinds of hydrophobic polymers. We show that the honeycomb- and pincushion-structured films of hydrophobic polymers have high water repellent properties. Especially, the water contact angles on pincushion-structured films are over 130°. From the results of these experiments, it appears that the surface structures prepared by self-organization process enhance the hydrophobicity of the surface. An easy process for creating highly water repellent surfaces is required to utilize these surfaces in industrial applications. Thus, the simple self-organization process has advantages from the standpoint of application.

Keywords: SELF-ORGANIZATION; HONEYCOMB; PINCUSHION; SUPERHYDROPHOBIC; POLYMER FILMS

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856108X305174

Affiliations: 1: Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Sendai 980-8577, Japan, Frontier Research System, Institute of Physical and Chemical Research (RIKEN Institute), 2-1, Hirosawa, Wako, Sait 2: Graduate School of Science, Hokkaido University, N10W8, Kita-ku, Sapporo 060-0810, Japan 3: Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Sendai 980-8577, Japan 4: Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Sendai 980-8577, Japan, Frontier Research System, Institute of Physical and Chemical Research (RIKEN Institute), 2-1, Hirosawa, Wako, Sait

Publication date: 2008-06-01

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