Effective dispersion of multi-walled carbon nanotubes in aqueous solution using an ionic-gemini dispersant

被引：50

作者：

Hou, Jiangtao ^{[1
]}

Du, Wenbo ^{[1
]}

Meng, Fanjing ^{[1
]}

Zhao, Chenchen ^{[2
]}

Du, Xian ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 512卷

关键词：

Multi-walled carbon nanotubes; Surface modification; Dispersion mechanism; Metal matrix composites; MECHANICAL-PROPERTIES; LOW-TEMPERATURE; SINGLE-WALL; COMPOSITES; SURFACTANTS; STABILITY; FUNCTIONALIZATION; MAGNESIUM;

D O I：

10.1016/j.jcis.2017.10.109

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：

A promising ionic-gemini molecule, 4, 4'-di (n-tetradecyl) diphenylmethane disulfate salt (DSDM), is reported for effective dispersion of multi-walled carbon nanotubes (MWCNTs) in aqueous medium in the present investigation. The dispersibility and stability of the DSDM-modified MWCNTs were characterized by UV-vis spectrophotometer, Raman spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy and zeta potential measurements. The hydrophobic interaction between alky chains and carbon nanotubes as well as the pi-pi-stacking interaction between benzene rings and carboatomic rings in MWCNTs enables a successful modification of DSDM onto the MWCNT surface. The dispersed MWCNTs individually existed in dispersion with no structural damage, indicating a much better performance than the MWCNTs dispersed by the sodium dodecylbenzene sulfonate (SDBS), a frequently reported single-chain ionic dispersant. Surface potential measurements showed that the DSDM-modified MWCNTs were negatively charged, giving rise to electrostatic repulsion between the MWCNTs in aqueous solution. A better MWCNT dispersion effect was observed with the increase in MWCNT surface potential, and the dispersion with high MWCNT surface potential presents high dispersion stability with no agglomeration appeared for more than 5 months. The magnesium (Mg) matrix composite fabricated based on the DSDM-dispersed MWCNTs demonstrated excellent mechanical properties compared to pure Mg. Our research may provide an alternative way to improve the mechanical properties of composites. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：750 / 757

页数：8

共 34 条

[11] Ballistic carbon nanotube field-effect transistors [J].

Javey, A ;

Guo, J ;

Wang, Q ;

Lundstrom, M ;

Dai, HJ .

NATURE, 2003, 424 (6949) :654-657

[12] Aggregation kinetics of SDBS-dispersed carbon nanotubes in different aqueous suspensions [J].

Ju, Li ;

Zhang, Wei ;

Wang, Xuejun ;

Hu, Jundong ;

Zhang, Yuling .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2012, 409 :159-166

[13] DYNAMICAL PROPERTIES OF SALT-FREE VISCOELASTIC MICELLAR SOLUTIONS [J].

KERN, F ;

LEQUEUX, F ;

ZANA, R ;

CANDAU, SJ .

LANGMUIR, 1994, 10 (06) :1714-1723

[14] Microstructural and mechanical analysis of carbon nanotube reinforced magnesium alloy powder composites [J].

Kondoh, Katsuyoshi ;

Fukuda, Hiroyuki ;

Umeda, Junko ;

Imai, Hisashi ;

Fugetsu, Bunshi ;

Endo, Morinobu .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (16-17) :4103-4108

[15] Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid [J].

Li, Minghua ;

Huang, C. P. .

CARBON, 2010, 48 (15) :4527-4534

[16] Selective synthesis combined with chemical separation of single-walled carbon nanotubes for chirality selection [J].

Li, Xiaolin ;

Tu, Xiaomin ;

Zaric, Sasa ;

Welsher, Kevin ;

Seo, Won Seok ;

Zhao, Wei ;

Dai, Hongjie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (51) :15770-+

[17] Dispersion stability of multi-walled carbon nanotubes in refrigerant with addition of surfactant [J].

Lin, Lingnan ;

Peng, Hao ;

Ding, Guoliang .

APPLIED THERMAL ENGINEERING, 2015, 91 :163-171

[18] Dispersion of multiwalled carbon nanotubes by ionic liquid-type Gemini imidazolium surfactants in aqueous solution [J].

Liu, Yonghui ;

Yu, Li ;

Zhang, Shaohua ;

Yuan, Jie ;

Shi, Lijuan ;

Zheng, Liqiang .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2010, 359 (1-3) :66-70

[19] Comparative study on modification of single wall carbon nanotubes by sodium dodecylbenzene sulfonate and melamine sulfonate superplasticiser [J].

Markovic, Z. ;

Jovanovic, S. ;

Kleut, D. ;

Romcevic, N. ;

Jokanovic, V. ;

Trajkovic, V. ;

Todorovic-Markovic, B. .

APPLIED SURFACE SCIENCE, 2009, 255 (12) :6359-6366

[20] Aqueous Nanosilica Dispersants for Carbon Nanotube [J].

Matsuda, Takafumi ;

Minami, Daiki ;

Khoerunnisa, Fitri ;

Sunaga, Motoo ;

Nakamura, Masahiro ;

Utsumi, Shigenori ;

Itoh, Tsutomu ;

Fujimori, Toshihiko ;

Hayashi, Takuya ;

Hattori, Yoshiyuki ;

Endo, Morinobu ;

Isobe, Hiroshi ;

Onodera, Hiroshi ;

Kaneko, Katsumi .

LANGMUIR, 2015, 31 (10) :3194-3202

← 1 2 3 4 →