Preparation and characterization of nanocomposite based on polyaniline and graphene nanosheets
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- 作者：Ngo Trinh Tung (13)
Tran Van Khai (2)
Minhee Jeon (1)
Yeo Jin Lee (1)
Hoeil Chung (1)
Jeong-Hwan Bang (4)
Daewon Sohn (1) dsohn@hanyang.ac.kr - 关键词：polyaniline – ; graphene nanosheet – ; conductivity – ; poly(sodium 4 ; styrensulfonate)
- 刊名：Macromolecular Research
- 出版时间：February 2011
- 出版年：2011
- 期刊代码：30_2092-7673
- 类别：ch
- 卷：19
- 期：2
- 页码：203-208
- 数据来源：sp
摘要
Polymer nanocomposites based on polyaniline (PANi) and graphene nanosheets (GNS) modified with poly(sodium 4-styrensulfonate) (PSS-GNS) were prepared, and their structure and properties were investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), UV-vis spectroscopy, ATR-IR spectroscopy, X-ray diffraction, elemental analysis, thermogravimetric analysis (TGA) and electrical conductivity measurements. The results revealed that for the PANi/PSS-GNS nanocomposites, the disordered structure of PSS-GNS was fully destroyed and PSS-GNS exists in the form of a single GNS or stacked PSS-GNS elements in a PANi matrix. PSS-GNS was partly covered by PANi due to hydrogen bonding that occurs between the PSS-GNS and PANi. By incorporating PSS-GNS, the electrical conductivity of PANi increased linearly from 0.84 S/cm for neat PANi to 4.96 S/cm for a PANi/PSS-GNS (5%) nanocomposite. The thermal stability of the PANi was also improved significantly to approximately 100 掳C by the nanocomposite.