Preparation and Characterization of Waterborne Fluorinated Polyurethane-Acrylate

Abstract:

Fluorinated urethane-acrylic monomer (FUA) was synthesized using toluene diisocyanate (TDI), 1H, 1H, 2H, 2H-Perfluorooctanol(FOH) as well as hydroxyethyl methacrylate(HEMA), and then applied to prepare waterborne fluorinated polyurethane-acrylate (FPUA) via emulsion polymerization. The effect of FUA content on surface properties of latex films was evaluated by means of nuclear magnetic resonance (¹H NMR), atomic force microscope (AFM) and water contact angle test. It is shown that FUA monomer content is related to phase separation of the film surface and water contact angle. As FUA content was increased from 0 wt% to 11.8 wt%, water contact angle was increased from 84° to 104.5°. Further increase of FUA has little influence on surface hydrophobicity but obvious effect on surface phase separation, and the reason which led to this phenomenon is described.

• Periodical: Key Engineering Materials (Volume 753)
• Pages: 60-64
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.753.60
• Online since: August 2017
• Authors: Wei Yang*, Ming Jian Song, Bin Xie, Yue Jing Zhou
• Keywords: Core-Shell Latex, Fluorinated Polyurethane-Acrylate, Hydrophobicity, Phase Separation

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