Effects of ZnO nanoparticles on the mechanical and antibacterial properties of polyurethane coatings |
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| Authors: | J.H. Li R.Y. Hong M.Y. Li H.Z. Li Y. Zheng J. Ding |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, SIP, Suzhou 215123, China;2. State Key Laboratory of Multiphase Reaction, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China;3. College of Life Science, Soochow University, SIP, Suzhou 215123, China;4. Department of Chemical Engineering, University of New Brunswick, Fredericton, N.B. E3B 5A3, Canada;5. MSC Software, 2 MacArthur Place, Santa Ana, CA 92707, USA |
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| Abstract: | Polyurethane-based coatings reinforced by ZnO nanoparticles (about 27 nm) were prepared via solution blending. The ZnO/PU films and coats were fabricated by a simple method of solution casting and evaporation. The mechanical properties of the films were investigated by a universal material test, and the abrasion resistance of the prepared coats was evaluated by a pencil-abrasion-resistance tester. It was found that significant improvement of the PU films in Young’s modulus and tensile strength was achieved by incorporating ZnO nanoparticles up to 2.0 wt%, and that the abrasion resistance of the PU coats was greatly enhanced due to the addition of ZnO nanoparticles. Moreover, the antibacterial property test was carried out via the agar dilution method and the result indicated that PU films doped with ZnO nanoparticles showed excellent antibacterial activity, especially for Escherichia coli. |
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| Keywords: | ZnO nanoparticles Polyurethanes Mechanical property Abrasion resistance Antibacterial property |
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