Synthesis of click‐coupled graphene sheets with hyperbranched polyurethane: Effective exfoliation and enhancement of nanocomposite properties |
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| Authors: | Sibdas Singha Mahapatra Santosh Kumar Yadav Jae Whan Cho |
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| Affiliation: | 1. Department of Organic and Nano System Engineering, Konkuk University, Seoul, South Korea;2. Department of Chemical & Biological Engineering, Drexel University, Philadelphia, Pennsylvania |
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| Abstract: | Graphene oxide (GO) was functionalized with hyperbranched polyurethane (HBPU) via click coupling between azide‐functionalized HBPU and alkynyl‐decorated GO. HBPU‐functionalized GO composites of various compositions were prepared. The azide‐containing HBPU was characterized using Fourier‐transform infrared (FT‐IR) spectroscopy and 1H‐nuclear magnetic resonance spectroscopy. The HBPU‐functionalized GO composites were characterized using transmission electron microscopy and FT‐IR spectroscopy. The functionalized GO showed excellent dispersion in the HBPU matrix, giving composites with enhanced mechanical and thermal properties. The material properties were effectively regulated by click‐coupled exfoliation of GO with HBPU, enabling the production of high‐performance materials. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44631. |
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| Keywords: | composites fullerenes functionalization of polymers graphene mechanical properties nanotubes |
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