Omniphobic Low Moisture Permeation Transparent Polyacrylate/Silica Nanocomposite

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• 作者：Sheng-Hao Hsu ; Yuan-Ling Chang ; Yu-Chieh Tu ; Chieh-Ming Tsai ; Wei-Fang Su
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2013
• 出版时间：April 24, 2013
• 年：2013
• 卷：5
• 期：8
• 页码：2991-2998
• 全文大小：454K
• 年卷期：v.5,no.8(April 24, 2013)
• ISSN：1944-8252

文摘

We report the development of low moisture permeation and transparent dense polyacrylate/silica nanocomposite material that can exhibit both superhydrophobic and oleophobic (omniphobic) properties. The material was prepared by a three-step process. The first step involved the preparation of UV polymerizable solventless hybrid resin and the fabrication of nanocomposite. The hybrid resin consisted of a mixture of acrylate monomer, initiator, and acrylate-modified different size silica nanoparticles. The second step was to roughen the surface of the nanocomposite with unique nanotexture by oxygen plasma. In the third step, we applied a low surface tension fluoro monolayer on the treated surface. The nanocomposite exhibits desired superhydrophobicity and oleophobicity with a water contact angle of 158.2掳 and n-1-octadecene contact angle of 128.5掳, respectively; low moisture permeation of 1.44 g路mm/m²路day; and good transparency (greater than 82% at 450鈥?00 nm for 60 渭m film). The material has potential applications in optoelectronic encapsulation, self-cleaning coating, etc.

Keywords:

superhydrophobic; oleophobic; omniphobic; nanocomposite; nanotexture; plasma