Polydopamine functional reduced graphene oxide for enhanced mechanical and electrical properties of waterborne polyurethane nanocomposites |
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| Authors: | Shengwen Zhang Dandan Zhang Zhen Li Yifan Yang Meng Sun Ziwen Kong Yang Wang Huiyu Bai Weifu Dong |
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| Affiliation: | 1.The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering,Jiangnan University,Wuxi,China;2.State Key Laboratory of Molecular Engineering of Polymers,Fudan University,Shanghai,China |
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| Abstract: | Waterborne polyurethane/polydopamine (PDA) functional reduced graphene oxide (WPU/PDRGO) nanocomposites were prepared by in situ emulsification method. The presence of a PDA layer and the partial reduction of GO by PDA were confirmed by FTIR, XRD, Raman spectra, and TGA. It was found that the interfacial PDA layers facilitated the dispersion of the PDRGO sheets in the WPU matrix and enhanced mechanical properties of the WPU matrix. The resulting WPU/PDRGO nanocomposite coatings show excellent electrical conductivity (9.9?×?10?6–1.1?×?10?4 S cm?1) corresponding to a PDRGO content of 1–16 wt%. The obtained waterborne polyurethane/graphene nanocomposite dispersions are promising for anticorrosion, antistatic, conductive, and electromagnetic interference shielding coatings. |
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