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

Hou, Jiangtao; Du, Wenbo; Meng, Fanjing; Zhao, Chenchen; Du, Xian

doi:10.1016/j.jcis.2017.10.109

Cited by 40 publications

(14 citation statements)

References 33 publications

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“…FTIR spectroscopy is an analytical technique for the chemical identification of functional groups, e.g., -OH and -COOH [70], by detecting the presence or absence of particular bands in the IR spectra [71]. FTIR is frequently used to study sulfonic-acid-containing surfactants such as sodium dodecylbenzene sulfonate (SDBS) [72], sodium dodecyl sulfate (SDS) [73], melamine sulfonate (MS) [74] and 4, 4-di (n-tetradecyl) diphenylmethane disulfate salt (DSDM) [75] adsorption on the CNTs in aqueous media. In this paper, FTIR is similarly used to characterise the nanofluids.…”

Section: Mwcnts and Naphthalene Sulfonate Interactionsmentioning

confidence: 99%

Multi-walled carbon nanotube dispersion methodologies in alkaline media and their influence on mechanical reinforcement of alkali-activated nanocomposites

Davoodabadi

Liebscher

Hampel

et al. 2021

Composites Part B: Engineering

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Section: Mwcnts and Naphthalene Sulfonate Interactionsmentioning

confidence: 99%

Multi-walled carbon nanotube dispersion methodologies in alkaline media and their influence on mechanical reinforcement of alkali-activated nanocomposites

Davoodabadi

Liebscher

Hampel

et al. 2021

Composites Part B: Engineering

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“…The peculiar structure of Gemini dispersant makes it capable of adsorbing on the surface of CNTs by π-π stacking interaction and hydrophobic interaction between dispersant molecules and CNTs simultaneously, leading to excellent distribution effect of CNTs [ 64 , 80 , 86 ]. Hou et al [ 87 ] presented an ionic Gemini dispersant that could efficiently and homogeneously distribute the CNTs without damaging its structure, and the dispersant could be removed simply by applying an annealing process that could prevent the introducing of impurities. They mixed MWCNTs and ionic-Gemini surfactant, 4,4´-di (n-dodecyl) diphenylmethane disulfate salt (C 12 -DSDM) in deionized water for obtaining the MWCNTs’ dispersion.…”

Section: Fabrication Of the Mg–cnts Metal Matrix Nanocomposites (Mmentioning

confidence: 99%

“…The authors presented that the DSDM-modified MWCNTs were negatively charged, giving rise to electrostatic repulsion between the MWCNTs in aqueous solution. A better MWCNTs distribution was seen with increasing MWCNTs surface potential, and the distribution with high MWCNTs surface potential presents high distribution stability with no clustering was seen for more than 5 months [ 87 ]. In the next step of the process, the powders of Mg and Al were gradually added to the prepared MWCNTs distribution, which was diluted using moderate ethanol, and stirred by impeller for 20 min.…”

Section: Fabrication Of the Mg–cnts Metal Matrix Nanocomposites (Mmentioning

confidence: 99%

Carbon Nanotubes (CNTs)-Reinforced Magnesium-Based Matrix Composites: A Comprehensive Review

et al. 2020

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In recent years considerable attention has been attracted to magnesium because of its light weight, high specific strength, and ease of recycling. Because of the growing demand for lightweight materials in aerospace, medical and automotive industries, magnesium-based metal matrix nanocomposites (MMNCs) reinforced with ceramic nanometer-sized particles, graphene nanoplatelets (GNPs) or carbon nanotubes (CNTs) were developed. CNTs have excellent material characteristics like low density, high tensile strength, high ratio of surface-to-volume, and high thermal conductivity that makes them attractive to use as reinforcements to fabricate high-performance, and high-strength metal-matrix composites (MMCs). Reinforcing magnesium (Mg) using small amounts of CNTs can improve the mechanical and physical properties in the fabricated lightweight and high-performance nanocomposite. Nevertheless, the incorporation of CNTs into a Mg-based matrix faces some challenges, and a uniform distribution is dependent on the parameters of the fabricating process. The characteristics of a CNTs reinforced composite are related to the uniform distribution, weight percent, and length of the CNTs, as well as the interfacial bonding and alignment between CNTs reinforcement and the Mg-based matrix. In this review article, the recent findings in the fabricating methods, characterization of the composite’s properties, and application of Mg-based composites reinforced with CNTs are studied. These include the strategies of fabricating CNT-reinforced Mg-based composites, mechanical responses, and corrosion behaviors. The present review aims to investigate and conclude the most relevant studies conducted in the field of Mg/CNTs composites. Strategies to conquer complicated challenges are suggested and potential fields of Mg/CNTs composites as upcoming structural material regarding functional requirements in aerospace, medical and automotive industries are particularly presented.

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“…Both physical and chemical approaches have been explored in an attempt to solve the dispersion problem of CNTs in the matrix. The physical approaches include, such as ultrasonic processing , ball milling , and the noncovalent surface modification . Moreover, the chemical modification is also an effective way to improve the dispersion of CNTs .…”

Section: Introductionmentioning

confidence: 99%

Homogeneous dispersion of multiwalled carbon nanotubes via in situ bubble stretching and synergistic cyclic volume stretching for conductive LDPE/MWCNTs nanocomposites

Yang

Tong

et al. 2019

Polymer Engineering & Sci

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Low-density polyethylene (LDPE)/multiwalled carbon nanotubes (MWCNTs) nanocomposites with different foaming agent (OBSH) contents were innovatively prepared via In Situ Bubble Stretching (ISBS) and synergistic cyclic volume stretching. The cyclic convergent and divergent flow makes the MWCNTs repeatedly subjected to bubble stretching, which is conducive to the efficient dispersion of MWCNTs in the matrix. The thermal weight loss of neat OBSH and nanocomposite were characterized by thermal gravimetric analyzer (TGA), which indicated that the OBSH in the nanocomposite had been completely decomposed into gas during the plasticizing transport process. The results of morphology showed that the moderate content of OBSH had better dispersion effect on MWCNTs. At optimal OBSH content, the OBSH could generate enough gas and larger bubbles per unit time to provide greater expansion forces to do much for the dispersion of MWCNTs. The dynamic mechanical analysis (DMA) was further carried out and also proved that the content of OSBH was an important factor for the dispersion of MWCNTs. Moreover, the relationship between the OBSH content and conductivity was discussed in details. The improvement in conductive properties of nanocomposites associated with the use of the method can be attributed to a more homogeneous dispersion of MWCNTs. POLYM. ENG.

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

Cited by 40 publications

References 33 publications

Multi-walled carbon nanotube dispersion methodologies in alkaline media and their influence on mechanical reinforcement of alkali-activated nanocomposites

Multi-walled carbon nanotube dispersion methodologies in alkaline media and their influence on mechanical reinforcement of alkali-activated nanocomposites

Carbon Nanotubes (CNTs)-Reinforced Magnesium-Based Matrix Composites: A Comprehensive Review

Homogeneous dispersion of multiwalled carbon nanotubes via in situ bubble stretching and synergistic cyclic volume stretching for conductive LDPE/MWCNTs nanocomposites

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