One-Step Reduction and Surface Modification of Graphene Oxide by 3-Hydroxy-2-Naphthoic Acid Hydrazide and Its Polypropylene Nanocomposites.
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.
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. xxn14@mails.tsinghua.edu.cn.|Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. xxn14@mails.tsinghua.edu.cn.
Xiang-Nan
XN
Xu
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. gxn16@mails.tsinghua.edu.cn.|Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. gxn16@mails.tsinghua.edu.cn.
Xiao-Na
XN
Guan
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. zhouhh@tsinghua.edu.cn.|National Center for Electron Microscopy Beijing, Beijing 100084, China. zhouhh@tsinghua.edu.cn.
Hui-Hua
HH
Zhou
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. yfzhu@tsinghua.edu.cn.|Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. yfzhu@tsinghua.edu.cn.
Yue-Feng
YF
Zhu
graphene; nanocomposites; reduction; surface modification