Effects of Plasma and Acid Treatment on the Dispersion of Carbon Nanotubes in Liquids

Jiang, Yu; Zhu, Yaling; Wang, Fengying; Chen, Wen-Jia

doi:10.1007/s11090-011-9298-z

Cited by 9 publications

(4 citation statements)

References 32 publications

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“…In addition, CNTs with different diameters were treated by plasma and acid. 32 The CNTs were dispersed in water and the light transmittance of the CNTs dispersoid (the mixture of CNTs and water) was measured to characterize the dispersibility of the CNTs. It was concluded that the dispersibility of the CNTs with bigger diameters was better.…”

Section: Plasma and Irradiation Techniquesmentioning

confidence: 99%

Dispersion of carbon nanotubes in water and non-aqueous solvents

2013

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Contemporary methods for dispersion of carbon nanotubes in water and non-aqueous media are discussed. Most attention is paid to ultrasonic and plasma techniques and other physical techniques, as well as to the use of surfactants, functionalizing and debundling agents of distinct nature (elemental substances, metal and organic salts, mineral and organic acids, oxides, inorganic and organic peroxides, organic sulfonates, polymers, dyes, natural products, biomolecules, and coordination compounds). Special studies on CNTs solubilization are examined.

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Section: Plasma and Irradiation Techniquesmentioning

confidence: 99%

Dispersion of carbon nanotubes in water and non-aqueous solvents

2013

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“…MWCNTs have strong van der Waals forces, which is key for improving the material performance through good dispersion 15‐17 . The parameters of the MWCNTs used in this experiment are listed in Table 2.…”

Section: Experimental Process Of Sample Preparationmentioning

confidence: 99%

Improvement in mechanical properties of enamel via carbon nanotube addition

Wang

Zhang

et al. 2020

Int J Applied Ceramic Tech

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Enameled metal equipment exploits the strength of metal materials and the corrosion resistance of enamel; therefore, it is widely used in the chemical industry. However, the mechanical properties of the enamel restrict its service life. Multi‐walled carbon nanotubes (MWCNTs) are one‐dimensional nanomaterials with high‐specific surface area, C–C bond structure, and SP2 hybrid orbital. Herein, the effect of the dosage of MWCNTs on the mechanical properties of enamel is studied by adding MWCNTs to improve the mechanical properties of the enamel. Microscopic observation showed that the toughening mechanism of MWCNTs was mainly manifested in fracture and pull out behaviors. According to three‐point bending test, when 0.4 wt% carbon nanotubes were added, the reinforcing effect of enamel layer reached the best state. These results provide reference for optimizing the formulation of enamel and extending the service life of enamel.

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“…Previous studies have indicated that acid solution treatment is an effective and ordinary method for decreasing the agglomeration of CNTs. Zhu et al [19] achieved the dispersive properties of CNTs by plasma and mixed acid solution treatment. Okpalugo et al [20] oxidized CNTs with mixed acid solution to obtain CNTs with carboxyl groups at the ends, and the dispersion of CNTs was improved.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nano-Hydroxyapatite Coated Carbon Nanotube Reinforced Hydroxyapatite Composites

et al. 2018

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Uniform and dense nano-hydroxyapatite (nHA) coating with nanorod-shaped structure was fabricated on carbon nanotubes (CNTs) by combining electrodeposition with biomineralization. The CNTs with nHA coating (nHA–CNTs) were used as reinforcement to improve the mechanical properties of HA. Firstly, a mixed acid solution of nitric acid and sulfuric acid was used to treat CNTs (NS–CNTs). The dispersion of NS–CNTs was obviously improved, and O-containing functional groups were grafted on the surfaces of NS–CNTs by treatment. Then, calcium phosphate (CaP) was deposited on NS–CNTs by electrodeposition, and NS–CNTs were provided with numerous active nucleation sites for the next coating preparation process. Then nanorod-shaped HA crystals were obtained on the surfaces of NS–CNTs by biomineralization. Using the CNTs with nHA coating (nHA–CNTs) as reinforcement, HA-based composites reinforced with CNTs and nHA–CNTs (nHA–CNTs/HA) were fabricated by pressure-less process. Bending strength and fracture toughness of 1.0 wt % nHA–CNTs reinforced HA composites (HAnC1) reaches a maximum (30.77 MPa and 2.59 MPa), which increased by 26.94% and 7.02% compared with 1.0 wt % CNTs reinforced HA composites, respectively. Importantly, the fracture toughness of HAnC1 is within the range of that to compact bone. This work provides theoretical and practical guidance for preparing nHA coating on nanomaterials. It also contributes to the potential application of nHA–CNTs/HA composites for artificial bone implants.

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Effects of Plasma and Acid Treatment on the Dispersion of Carbon Nanotubes in Liquids

Cited by 9 publications

References 32 publications

Dispersion of carbon nanotubes in water and non-aqueous solvents

Dispersion of carbon nanotubes in water and non-aqueous solvents

Improvement in mechanical properties of enamel via carbon nanotube addition

Preparation of Nano-Hydroxyapatite Coated Carbon Nanotube Reinforced Hydroxyapatite Composites

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