Mechanical and Thermal Properties of Carbon Nanotubes

Ruoff, Rodney S.; Lorents, D. C.

doi:10.1016/b978-0-08-042682-2.50021-7

Cited by 133 publications

(155 citation statements)

References 12 publications

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“…where condition in (2) has been applied again and the integral is a hypersingular one that must be interpreted in the sense of Hadamard finite part (f.p.). It is easy to verify that:…”

Section: Hypersingular Bie Formulation For Rigid-line Inclusionsmentioning

confidence: 99%

“…(1)(2)(3)(4) can be written as the following representation integral (see, e.g., Refs. [29][30][31]):…”

Section: Hypersingular Bie Formulation For Rigid-line Inclusionsmentioning

confidence: 99%

“…For example, the Young's modulus of CNTs is in general greater than 1 TPa, while the thermal conductivity is in the range of 2000-6000 W/m-K at the room temperature (see, e.g., Refs. [1][2][3][4][5][6][7][8][9][10]). Thus, the rigid-line approach seems to be especially suitable and promising for large scale modeling and analysis of CNTbased composites using the continuum approach, when the overall (not local) mechanical properties of the composites are to be investigated [11][12][13].…”

Section: Introductionmentioning

confidence: 98%

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Thermal analysis of carbon-nanotube composites using a rigid-line inclusion model by the boundary integral equation method

Nishimura

Liu

2004

Computational Mechanics

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The boundary integral equation (BIE) method is applied for the thermal analysis of fiber-reinforced composites, particularly the carbon-nanotube (CNT) composites, based on a rigid-line inclusion model. The steady state heat conduction equation is solved using the BIE in a two-dimensional infinite domain containing line inclusions which are assumed to have a much higher thermal conductivity (like CNTs) than that of the host medium. Thus the temperature along the length of a line inclusion can be assumed constant. In this way, each inclusion can be regarded as a ''rigid line'' (the opposite of a crack) in the medium. It is shown that, like the crack case, the hypersingular (derivative) BIE can be applied to model these rigid lines. The boundary element method (BEM), accelerated with the fast multipole method, is used to solve the established hypersingular BIE. Numerical examples with up to 10,000 rigid lines (with 1,000,000 equations), are successfully solved by the BEM code on a laptop computer. Effective thermal conductivity of fiber-reinforced composites are evaluated using the computed temperature and heat flux fields. These numerical results are compared with the analytical solution for a single inclusion case and with the experimental one reported in the literature for carbon-nanotube composites for multiple inclusion cases. Good agreements are observed in both situations, which clearly demonstrates the potential of the developed approach in large-scale modeling of fiber-reinforced composites, particularly that of the emerging carbonnanotube composites.

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“…where condition in (2) has been applied again and the integral is a hypersingular one that must be interpreted in the sense of Hadamard finite part (f.p.). It is easy to verify that:…”

Section: Hypersingular Bie Formulation For Rigid-line Inclusionsmentioning

confidence: 99%

“…(1)(2)(3)(4) can be written as the following representation integral (see, e.g., Refs. [29][30][31]):…”

Section: Hypersingular Bie Formulation For Rigid-line Inclusionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Thermal analysis of carbon-nanotube composites using a rigid-line inclusion model by the boundary integral equation method

Nishimura

Liu

2004

Computational Mechanics

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“…CNTs consist of a hollow and layered structure with a large specific surface area [11,12], and have remarkably proven their adsorption capacity. On the same note, CNTs also have been widely used for many other applications such as field emission spectroscopy [13], nanodevices [14], hydrogen storage [15], and chemical sensors [16] due to its formidable chemical [17], electrical [18], and mechanical properties [19]. Hence, CNTs are the most promising candidates for removal of heavy metals from waste, particularly in water treatment and separation processes.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis of multi-walled carbon nanotubes for enhanced removal of Zn(II) from wastewater

et al. 2015

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Removal of toxic metals is one of the biggest challenges in ensuring safe water for all as well as protecting the environment. Novel multi-walled carbon nanotubes (MCNTs) have been successfully synthesised by microwave techniques and improved to be an outstanding adsorbent for the removal of Zn(II) from wastewater. The adsorption of Zn(II) was studied and optimized as a function of pH, initial Zn(II) concentration, MCNT dosage, agitation speed, and adsorption time. In order to investigate the dynamic behavior of MCNTs as an adsorbent, the kinetic data were modeled using pseudo-first-order and second-order kinetic models. Different thermodynamic parameters, viz., DH°, DS°and DG°have also been evaluated and it has been found that the adsorption was feasible, spontaneous and endothermic in nature. Statistical analysis reveals that the optimum conditions for the highest removal (99.9 %) of Zn(II) are at pH 10, a MCNT dosage 0.05 g, an agitation speed and time of 160 rpm and 60 min, respectively, with an initial concentration of 10 mg/L. On the basis of the Langmuir model, q m was calculated to be 90.9 mg/g & J. N. Sahu jay_sahu@yahoo.co.in N. M. Mubarak for microwave-synthesized MCNTs. Our results proved that MCNTs can be used as an effective Zn(II) adsorbent due to their high adsorption capacity as well as the short adsorption time needed to achieve equilibrium. Hence, MCNTs serve an important role in the removal of heavy metals from wastewater.

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“…Due to their unique physicochemical properties even low additives of CNT and CNF to various materials can improve considerably their mechanical characteristics and thermal and electrical conductivity [3,4]. Specifically, reinforcement of aluminum and its alloys with carbon nanostructures (CNS) gives high-strength and light structural composite materials for aircraft and automotive applications [2,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hot Pressing Modes on the Structure and Properties of an ‘Aluminum – Carbon Nanofibers’ Composite Material

et al. 2015

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Mechanical and Thermal Properties of Carbon Nanotubes

Cited by 133 publications

References 12 publications

Thermal analysis of carbon-nanotube composites using a rigid-line inclusion model by the boundary integral equation method

Thermal analysis of carbon-nanotube composites using a rigid-line inclusion model by the boundary integral equation method

Microwave-assisted synthesis of multi-walled carbon nanotubes for enhanced removal of Zn(II) from wastewater

Effect of Hot Pressing Modes on the Structure and Properties of an ‘Aluminum – Carbon Nanofibers’ Composite Material

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