Strengthened epoxy resin with hyperbranched polyamine-ester anchored graphene oxide via novel phase transfer approach
| Autor: | Haijun Zhou, Shi-Yun Li, Xiaojing Wang, Zhanhu Guo, Zhang Jing, Jiaoxia Zhang, Qiang Wang, Yining Feng, Yun-Xia Liang, Na Lu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Materials Science (miscellaneous) Oxide 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Ultimate tensile strength Materials Chemistry Fourier transform infrared spectroscopy Composite material Graphene Izod impact strength test Dynamic mechanical analysis Epoxy 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry visual_art Ceramics and Composites visual_art.visual_art_medium 0210 nano-technology Glass transition |
| Zdroj: | Advanced Composites and Hybrid Materials. 1:300-309 |
| ISSN: | 2522-0136 2522-0128 |
| DOI: | 10.1007/s42114-017-0007-0 |
| Popis: | This work investigated the mechanical properties of epoxy resin composites embedded with graphene oxide (GO) using a novel two-phase extraction method. The graphene oxide from water phase was transferred into epoxy resin forming homogeneous suspension. Hyperbranched polyamine-ester (HBPE) anchored graphene oxide (GOHBPE) was prepared by modifying GO with HBPE using a neutralization reaction. Fourier transform-infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM) showed that the HBPE was successfully grafted to the GO surface. The mechanical properties and dynamic mechanical analysis (DMA) of the composites demonstrated that GOHBPE played a critical role in mechanical reinforcement owing to the layered structure of GO, wrinkled topology, surface roughness and surface area ascending from various oxygen groups of GO itself, and the inarching of HBPE and the reaction among GO, HBPE, and epoxy resin. The transferred GOHBPE/epoxy resin composites showed 69.1% higher impact strength, 129.1% more tensile strength, 45.3% larger modulus, and 70.8% higher strain compared to that of cured neat epoxy resin. The glass transition temperature (Tg) of GOHBPE/epoxy resin composites was increased from 135 to 141 °C and their damping capacity was also improved from 0.71 to 0.91. This study provides guidelines for the fabrication of strengthened polymer composites using phase transfer approach. |
| Databáze: | OpenAIRE |
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