Superhydrophobicity of Lotus-leaf-like Fluorinated Ethylene Propylene Copolymer Surface

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (5): 1175.

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Superhydrophobicity of Lotus-leaf-like Fluorinated Ethylene Propylene Copolymer Surface

LIU Chuan-Sheng, JIANG Wen-Qu, GUAN Zi-Sheng*

College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China

Received:2010-05-25 Revised:2010-07-11 Online:2011-05-10 Published:2011-04-11
Contact: GUAN Zi-Sheng E-mail:zishengguan@163.com
Supported by:
国家自然科学基金(批准号: 20573055, 21071081)资助.

Abstract

Abstract: Superhydrophobic fluorinated ethylene propylene (FEP) copolymer surface with lotus-leaf-like structure was prepared by thermoforming FEP powder at the condition of 0.3 N/cm2 , 280 ℃ and -0.1Mpa vacuum on the polydimethylsiloxane (PDMS) templates, which replicated the lotus leaf surface. SEM results indicate that the FEP surface shows great similar lotus-leaf-like structures with superhydrophobic, corresponding water contact angle and tilt angle are 168° and 3°, respectively. The superhydrophobic lotus-leaf-like FEP surface also exhibits good stability in water, acohol, acid and alkaline solution after duration of decads-hours immersion. Furthermore, once the hydrophobicity of FEP surface decreased, it?s recoverable via an immersion process in piranha solution for several decades minutes. Differential scanning calorimetry (DSC) results indicate the mass loss of the PDMS templates is very low means that it can be used repeatedly during the therm forming process. Therefore, our methods combine the very good acid resistant, alkaline resistant and corrosion resistant of the FEP with lotus-leaf-like structure to fabrication of superhydropobic surface may be applied in preparation of anti-adhension and self-cleaning vessels, etc.

Key words: Polydimethylsiloxane, Superhydrophobicity, Lotus-leaf-like structure, Fluorinated ethylene propylene

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LIU Chuan-Sheng, JIANG Wen-Qu, GUAN Zi-Sheng*. Superhydrophobicity of Lotus-leaf-like Fluorinated Ethylene Propylene Copolymer Surface[J]. Chem. J. Chinese Universities, 2011, 32(5): 1175.

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Superhydrophobicity of Lotus-leaf-like Fluorinated Ethylene Propylene Copolymer Surface

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