Dispersion stability of single-walled carbon nanotubes using Nafion in bisolvent

被引：69

作者：

Lee, Jin-Hyon

Paik, Ungyu ^{[1
]}

Choi, Jae-Young

Kim, Ki Kang

Yoon, Seon-Mi

Lee, Jeonghee

Kim, Byung-Ki

Kim, Jong Min

Park, Min Ho

Yang, Cheol Woong

An, Kay Hyeok

Lee, Young Hee

机构：

[1] Hanyang Univ, Div Adv Mat Sci, Seoul 133791, South Korea

[2] Samsung Adv Inst Technol, Mat Ctr, Suwon 440600, South Korea

[3] Sungkyunkwan Univ, Sch Adv Mat & Engn, Suwon 440746, South Korea

[4] Sungkyunkwan Univ, BK21 Phys Div,Inst Basic Sci,Carbon Nanotube Res, Ctr Nanotubes & Nanostruct Composites, Sunkyunkwan Adv Inst Nanotechnol, Suwon 440746, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 06期

关键词：

D O I：

10.1021/jp0670485

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the effect of Nation and its resulting interaction with single-walled carbon nanotubes (SWCNTs) on the solubility and dispersion properties of SWCNTs in bisolvent. Nafion was used as a polymeric dispersant, providing both electrostatic and steric stabilization in the preparation of a stable and homogeneous suspension of SWCNTs. A correlation was made between solubility and nanodispersion of SWCNTs. Optical spectroscopy showed that the solubility and nanodispersion of SWCNTs increased with the addition of 1-propanol and were greatest at a volume mixture of water/1-propanol of 80/20. We propose a mechanism of improved solubility and nanodispersion of SWCNTs, which is strongly correlated with the adsorption behavior of Nafion on SWCNTs, the surface potential of SWCNTs, and the solubility of Nafion in a liquid medium; amphiphilic Nafion enhances the dispersion of SWCNTs in the mixture of hydrophilic water and relatively hydrophobic I-propanol.

引用

页码：2477 / 2483

页数：7

共 56 条

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