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Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (4): 821.

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Effect of Heat Treatment on Surface Properties of Superhydrophobic PMMA-PFAEA Film

WEI Hai-Yang1, HE Wen-Xiao1, SU Xiao-Li1,2, LI Xin-Xin1*, HAN Zhe-Wen1   

    1. Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Shanghai 3F New Materials Company Limited, Shanghai 200235, China
  • Received:2008-07-27 Online:2009-04-10 Published:2009-04-10
  • Contact: LI Xin-Xin, E-mail:xinxinli@ecust.edu.cn

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Abstract:

The superhydrophobic films of perfluoroalkyl ethyl acrylate(FAEA) and methyl methacrylate(MMA) copolymers were prepared with one-step casting technique with 1,1,2-trifluoro-trichloro-ethane(F113) as solvent. It was found the contact angle(CA) decreased while sliding angle(SA) changed a lot as the heat treatment continued. Although these original films had large CA and small SA, while annealed for 3 h to 6 h, the films showed large SA hysteresis. However, if continued annealing for a longer time to 32 h, the SA reversed to very small again. The unique changes of hydrophobic properties of these films were due to the changes in surface roughness, which was shown by SEM.

Key words: Super-hydrophobic surface, Perfluoroalkylethyl acrylate, Sliding angle, Heat treatment

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