Amino-Functionalization of Graphene Sheets and the Fabrication of Their Nanocomposites

被引：60

作者：

Hu, Yizhe ^{[1
]}

Shen, Jianfeng ^{[1
]}

Li, Na ^{[1
]}

Shi, Min ^{[1
]}

Ma, Hongwei ^{[1
]}

Yan, Bo ^{[1
]}

Wang, Wenbin ^{[1
]}

Huang, Weishi ^{[1
]}

Ye, Mingxin ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Special Mat & Technol Ctr, Shanghai 200433, Peoples R China

来源：

POLYMER COMPOSITES | 2010年 / 31卷 / 12期

关键词：

WALLED CARBON NANOTUBES; GRAPHITE;

D O I：

10.1002/pc.20984

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Expandable graphite oxide (EGO) was functionalized with different amine groups after sequential steps as thermal expansion, oxidation, acylation, and amidation. Three types of amino-functionalized graphenes (a-Gphs) were prepared by exfoliating amino functionalized EGOs(a-EGO) through controlled ultrasonication. Fourier transform infrared spectroscopy, elementary analysis, X-ray diffraction, and thermogravimetric analysis separately confirmed the chemical structure of a-EGO. The effect of ultrasonic power on the particle sizes of exfoliated a-EGOs was estimated by dynamic light scattering. Single layered graphene (0.43 nm) was achieved after ultrasonicating at 500 W for 20 min, which was affirmed by the results of atomic force microscopy and transmission electron microscopy. Ultra violet-visible spectroscopy also indicates the good dispersion properties of a-Gphs in these solvents. The thermal properties of composites are obviously increased by adding a-Gphs and a-EGOs as nanofillers. POLYM. COMPOS., 31:1987-1994, 2010. (C) 2010 Society of Plastics Engineers

引用

页码：1987 / 1994

页数：8

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