Xu Xiang-Nan, Guan Xiao-Na, Zhou Hui-Hua, Zhu Yue-Feng
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China.
Nanomaterials (Basel). 2017 Jan 24;7(2):25. doi: 10.3390/nano7020025.
3-Hydroxy-2-naphthoic acid hydrazide (HNH), a new reductant and modifier, was applied to reduce and modify graphene oxide (GO) in a one-step process. The obtained HNH reduced graphene oxide (HNH-rGO) was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, X-ray photoelectron spectroscopic (XPS) and Fourier transform infrared spectra (FTIR). The results demonstrated that GO was successfully reduced to graphene and the surface of HNH-rGO was grafted with HNH. The interlayer space was increased from 0.751 nm to 1.921 nm, and its agglomeration was much more attenuated compared with GO. HNH-rGO/polypropylene and graphene/polypropylene composites were synthesized through melt-blending method. The viscosity was enhanced with increased addition of graphene and surface modified graphene demonstrated stronger rheological behavior improving effect than the untreated graphene.
3-羟基-2-萘甲酸酰肼（HNH）作为一种新型还原剂和改性剂，用于一步法还原和改性氧化石墨烯（GO）。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、拉曼光谱、X射线光电子能谱（XPS）和傅里叶变换红外光谱（FTIR）对所得的HNH还原氧化石墨烯（HNH-rGO）进行了表征。结果表明，GO成功还原为石墨烯，且HNH-rGO表面接枝了HNH。层间距从0.751 nm增加到1.921 nm，与GO相比，其团聚程度大大减弱。通过熔融共混法合成了HNH-rGO/聚丙烯和石墨烯/聚丙烯复合材料。随着石墨烯添加量的增加，粘度增大，且表面改性石墨烯比未处理的石墨烯表现出更强的流变行为改善效果。
