Preparation of a carbon nanotube/carbon fiber multi-scale reinforcement by grafting multi-walled carbon nanotubes onto the fibers

He, Xiaodong; Zhang, Fuhua; Wang, Rongguo; Liu, Wenbo

doi:10.1016/j.carbon.2007.08.018

Cited by 205 publications

(102 citation statements)

References 27 publications

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“…A number of studies have reported the fabrication of CNT-grafted fibres using both direct growth of CNTs onto fibres [12][13][14][15][16][17][18][19] and chemical reactions between modified fibres and CNTs [20]. Among those methods, chemical vapour deposition (CVD) appears to be an efficient way to produce CNT-grafting, with controllable size [16,21] and orientation [14].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation

Qian

Bismarck

Greenhalgh

et al. 2010

Composites Part A: Applied Science and Manufacturing

211

105

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Carbon nanotubes (CNTs) were grafted on IM7 carbon fibres using the chemical vapour deposition method. The overall grafting process resulted in a threefold increase of the BET surface area compared to the original primary carbon fibres (0.57 m 2 /g). At the same time, there was a degradation of fibre tensile strength by around 15% (depending on gauge length), due to the dissolution of iron catalyst into the carbon; the modulus was not significantly affected. The wetting behaviour between fibres and poly(methyl methacrylate) (PMMA) was directly quantified using contact angle measurements for drop-on-fibre systems and indicated good wettability. Single fibre fragmentation tests were conducted on hierarchical fibre/PMMA model composites, demonstrating a significant (26%) improvement of the apparent interfacial shear strength (IFSS) over the baseline composites. The result is associated with improved stress transfer between the carbon fibres and surrounding matrix, through the grafted CNT layer. The improved IFSS was found to correlate directly with a reduced contact angle between fibre and matrix.

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Section: Introductionmentioning

confidence: 99%

Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation

Qian

Bismarck

Greenhalgh

et al. 2010

Composites Part A: Applied Science and Manufacturing

211

105

View full text Add to dashboard Cite

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“…The former peak was assigned to the sp 2 carbon atoms of the graphene sheets, and the latter peak was ascribed to the defects on the CNT walls [39]. As shown in Figure 2c, in the case of AF-MWCNTs, the XPS spectrum showed new peaks occurring at 285.6 and 287.2 eV correspond to carbon in C-NH 2 and >C=O, respectively [40,41]. The presence of these peaks confirms the 4-aminobenzoyl moieties on the side walls of the AF-MWCNTs.…”

mentioning

confidence: 93%

Electroactive polyurea/CNT composite-based electrode for detection of vitamin C

Huang¹,

Yeh²,

Lai³

et al. 2016

Express Polym. Lett.

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Abstract. The electrocatalytic oxidation of vitamin C at carbon paste electrode (CPE) modified with amino-functionalized multiwalled carbon nanotube/electroactive polyurea (AF-MWCNT/EPU) composite was investigated. We have synthesized novel electroactive polyurea composites containing MWCNTs functionalized with 4-aminobenzoyl groups by an oxidative coupling polymerization. Ultraviolet-Visible spectra and cyclic voltammetry studies confirmed the occurrence of efficient interaction between AF-MWCNT and EPU graft. Moreover, the electrocatalytic activity of vitamin C oxidation by utilizing aniline containing composites was evaluated, showing that the intrinsic electroactivity of AF-MWCNT/EPU-CPE had great potential application for detection of vitamin C. The detection limit and sensitivity of this sensor was 1.2 µM and 35.3 !A·mM -1 , respectively.

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“…A number of groups have attempted to graft carbon nanotubes to the surface of carbon fibres [1][2][3][4] with the aim of improving the interface with a resin material. Of particular note, the interface between carbon fibres and a polymer matrix material has been recently reported to be enhanced by using carbon nanotubes (CNT) [5].…”

Section: Introductionmentioning

confidence: 99%

Hybrid carbon fibre–carbon nanotube composite interfaces

Jin

Young

Eichhorn

2014

Composites Science and Technology

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Both low and high modulus carbon fibres are coated with carboxylated single wall carbon nanotubes (SWNTs). It is shown that it is then possible to follow, for the first time, the local deformation of low modulus carbon fibres and composite interfaces using Raman spectroscopy. By deforming coated single carbon fibre filaments in tension, and following the shift in the position of a band located at ~2660 cm -1 (2D band) it is possible to calibrate the local stress state of a fibre embedded in an epoxy resin. To follow the interface between the fibres and the epoxy resin, a thin film model composite is used. Point-to-point variation of stress along a single fibre, both inside and outside the resin, is recorded and stress transfer models are used to determine the 2 fibres due to an increased surface area as a result of the nanotubes and additional bonding caused due to the presence of carboxylate groups.

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Preparation of a carbon nanotube/carbon fiber multi-scale reinforcement by grafting multi-walled carbon nanotubes onto the fibers

Cited by 205 publications

References 27 publications

Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation

Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation

Electroactive polyurea/CNT composite-based electrode for detection of vitamin C

Hybrid carbon fibre–carbon nanotube composite interfaces

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