Effect of the length and the aggregate size of MWNTs on the improvement efficiency of the mechanical and electrical properties of nanocomposites—experimental investigation

Bai, Jinbo; Allaoui, Aïssa

doi:10.1016/s1359-835x(03)00140-4

Cited by 419 publications

(235 citation statements)

References 17 publications

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“…Aggregations of nanotubes due to van der Waals interactions and shear forces during mixing have been reported to cause a drop in electrical conductivity [32][33][34] . Considering high aspect ratio and good dispersion, nanotubes can reach conductivity thresholds at lower loading levels and can create networks that facilitate the electron transport.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

et al. 2013

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Nanostructured polymer composites have opened up new perspectives for multifunctional materials. In particular, carbon nanotubes (CNTs) present potential applications in order to improve mechanical and electrical performance in composites with aerospace application. The combination of epoxy resin with multiwalled carbon nanotubes results in a new functional material with enhanced electromagnetic properties. The objective of this work was the processing of radar absorbing materials based on formulations containing different quantities of carbon nanotubes in an epoxy resin matrix. To reach this objective the adequate concentration of CNTs in the resin matrix was determined. The processed structures were characterized by scanning electron microscopy, rheology, thermal and reflectivity in the frequency range of 8.2 to 12.4 GHz analyses. The microwave attenuation was up to 99.7%, using only 0.5% (w/w) of CNT, showing that these materials present advantages in performance associated with low additive concentrations.

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Section: Introductionmentioning

confidence: 99%

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

et al. 2013

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“…However, the reported results about these properties are scattered and still far from satisfactory. Analyses of these research results show that the performance of these composites depends on many factors, such as the types of CNTs (SWNTs or MWNTs) and their morphology and structure (diameter, length and chirality, for example) [34], the processing method, the choice of matrix [34,35], the CNT dispersion within matrix [36], the interfacial interaction between CNTs and matrix, and so on. In this article, we will present a comprehensive review about the preparation and processing, the properties and application of CNT/polymer composites.…”

Section: Introductionmentioning

confidence: 99%

The present status and key problems of carbon nanotube based polymer composites

Du¹,

Bai²,

Cheng³

2007

Express Polym. Lett.

419

250

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Abstract. The state-of-art and key problems of carbon nanotube (CNT) based polymer composites (CNT/polymer composites) including CNT/polymer structural composites and CNT/polymer functional composites are reviewed. Based on the results reported up to now, CNTs can be an effective reinforcement for polymer matrices, and the tensile strength and elastic modulus of CNT/polymer composites can reach as high as 3600 MPa and 80 GPa, respectively. CNT/polymer composites are also promising functional composite materials with improved electrical and thermal conductivity, etc. Due to their multi-functional properties, CNT/polymer composites are expected to be used as low weight structural materials, optical devices, thermal interface materials, electric components, electromagnetic absorption materials, etc. However, the full potential of CNT/polymer composites still remains to be realized. A few key problems, such as how to prepare structurecontrollable CNTs with high purity and consistently dependable high performance, how to break up entangled or bundled CNTs and then uniformly disperse and align them within a polymer matrix, how to improve the load transfer from matrix to CNT reinforcement, etc, still exist and need to be solved in order to realize the wide applications of these advanced composites.

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“…When electric field is applied in samples containing CNTs, the electrons are permitted to go through the sample due to the creation of the interconnecting conductive channels. [26][27][28][29] The pPLACNTs nanocomposite films showed higher electrical conductivity than samples not containing ESO (PLACNTs). In the sample PLACNT-5, the conductivity of the film was 10 −6 S/cm whereas the conductivity of the film in pPLACNT-5 was 10 −4 S/cm.…”

Section: Electrical Conductivity Properties and Voltage Effects Of Ppmentioning

confidence: 92%

Influence of Multiwalled Carbon Nanotubes on Biodegradable Poly(lactic acid) Nanocomposites for Electroactive Shape Memory Actuator

2016

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Poly(lactic acid)/epoxidized soybean oil/carbon nanotubes (PLA/ESO/CNTs) nanocomposites were prepared by the solution blending process, and the influence of ESO on the properties of the composites was studied. Differential scanning calorimetry and X-ray diffraction revealed that the addition of CNTs improved the crystallinity of the nanocomposites. The modulus increased with the addition of CNTs content in the composites. Morphological characterizations were done by scanning electron microscopy and transmission electron microscopy. Electrical conductivity of PLA/ESO/CNT composites increased with the addition of CNTs. This study revealed that the addition of ESO facilitated the dispersion of the CNTs in the PLA matrix. C

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Effect of the length and the aggregate size of MWNTs on the improvement efficiency of the mechanical and electrical properties of nanocomposites—experimental investigation

Cited by 419 publications

References 17 publications

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

Nanostructured composites based on carbon nanotubes and epoxy resin for use as radar absorbing materials

The present status and key problems of carbon nanotube based polymer composites

Influence of Multiwalled Carbon Nanotubes on Biodegradable Poly(lactic acid) Nanocomposites for Electroactive Shape Memory Actuator

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