Dispersion of multi-wall carbon nanotubes by an ionic liquid-based polyether in aqueous solution

被引：15

作者：

Gao, Hejun ^{[1
,2
]}

Zhang, Shaohua ^{[1
]}

Huang, Deping ^{[1
]}

Zheng, Liqiang ^{[1
]}

机构：

[1] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China

[2] China W Normal Univ, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637000, Peoples R China

来源：

COLLOID AND POLYMER SCIENCE | 2012年 / 290卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Ionic liquid-based polyether; Multi-wall carbon nanotubes; Dispersion; Electrostatic repulsions; SURFACTANTS; ROUTE; SEPARATION; POLYMERS;

D O I：

10.1007/s00396-012-2619-9

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：

Multi-wall carbon nanotubes (MWCNTs) can be effectively dispersed by an ionic liquid-based polyether, poly(1-glycidyl-3-methylimidazolium chloride) (PGMIC) in aqueous solution. The amount of dispersed MWCNTs increases with the increasing of PGMIC concentration, and then decreases. Reaggregation of MWCNTs is observed when PGMIC exceeded the optimal concentration, which may be due to the conformational change of PGMIC molecules around MWCNT. The ultrasonic dispersion method is better than stirring method in the PGMIC solution. Furthermore, the acidic solution is convenient to prepare stable MWCNTs suspensions. Through the characterizations of ultraviolet-visible-near infrared, thermogravimetric analysis and Fourier transform infrared, it can be concluded that electrostatic repulsions, hydrophobic effect, n-pi, and cation-pi interactions played important roles in the dispersion of MWCNTs.

引用

页码：757 / 762

页数：6

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