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Introduction Since Beyer initiated the use of carbon nanotubes in fire retardant polymeric materials [ 1 ], carbon nanoadditives, including carbon nanotubes, carbon nanofibers and carbon black, have been studied systematically

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Journal of Flow Chemistry
Authors:
Patrizio Salice
,
Emiliano Rossi
,
Alessandro Pace
,
Prasenjit Maity
,
Tommaso Carofiglio
,
Enzo Menna
, and
Michele Maggini

The covalent chemistry of carbon nanostructures has put forth a wide variety of interesting derivatives that widen their potential as functional materials. However, the synthetic procedures that have been developed to functionalize the nanostructures may require long reaction times and harsh conditions. In this paper, we study the continuous flow processing of single-wall carbon nanotubes with azomethine ylides and diazonium salts and demonstrate that this approach is effective to reduce reaction times and tune the properties of the functionalized carbon materials.

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formulations. Carbon nanotubes (CNTs) display exceptional properties that can potentially be used in many applications ranging from macroscopic material composites down to nanodevices. The properties and applications of CNTs and related materials have

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complex metabolites and complicated pretreatments in biological samples, it is necessary to determine silodosin by an appropriate adsorbent material for the enrichment. The discovery of carbon nanotubes (CNTs) had brought an increasing number of

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Abstract  

High resolution thermogravimetry has been used to evaluate the carbonaceous content in a commercial sample of single-walled carbon nanotube (SWNT). The content of SWNTs in the sample was found to be at least 77 mass% which was supported by images obtained with scanning and transmission electron microscopies (SEM and TEM). Furthermore, the influence of SWNT addition on the thermal stability of graphite in mixtures of SWNT/graphite at different proportions was investigated. The graphite stability decreased with the increased of SWNT content in the overall range of composition. This behavior could be due to the close contact between these carbonaceous species as determined by SEM analysis.

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order reaction kinetics. Therefore, it is equally important to realize the effect of structural features of carbon nanotubes (CNTs) e.g., purity and type of CNT used, diameter and length of CNTs, defect types and concentration, catalyst type and content

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yielding the transcrystalline superstructure around GF [ 30 ]. Carbon nanotubes (CNTs), as novel fibrillous fillers, have been extraordinarily developed in recent years. Especially, CNTs possess an extraordinary nucleation capability that a relatively low

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Abstract  

Thermogravimetric (TG) and varied temperature Raman spectroscopic measurements of melt-blended polypropylene composites (PP) with double wall (DWNT) and multi-wall carbon nanotubes (MWNT) revealed that the incorporation of carbon nanotubes into polymer matrix increased the thermal stability comparing to the virgin polypropylene. The characterization of reference nanotubes was also done by Raman microscopy and TG measurements. Varied temperature rheological analysis provided further information about the thermal decomposition of the composites indicating the formation of high strength char in case of MWNT and limited applicability of DWNT at high temperature. The residue of the decomposition of PP-MWNT nanocomposites consists of nanotubes of spectroscopically higher purity comparing to the original one indicating the thermally induced chemical changes in the solid phase.

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Nanopages
Authors:
A. Szabo
,
A. Fonseca
,
L. P. Biro
,
Z. Konya
,
I. Kiricsi
,
A. Volodin
,
C. Van Hasendonck
, and
J. B.Nagy

Some recent results on the synthesis of coiled carbon nanotubes (CNTs) are summarized. Several supported catalysts can lead to the formation of coiled CNTs. Interestingly, certain domains of the coil pitch and coil diameter are favoured, and two “stability islands”are found in the 3D representation of the number of coiled CNTs as a function of both coil pitch and coil diameter. It is emphasized that these nanotubes are formed either by introducing pairs of five-membered ring - seven-membered ring or by forming haeckelite structures. The coiled CNTs could be used in nanocomposite reinforcement as well as special sensors based on their remarkable mechanical and electrical properties.

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, safety, and automation. Recently, this method has been successfully used to clean up liquid samples or the extracts of various samples [ 15 – 21 ]. Carbon nanotubes are characterized by physicochemical properties, such as stronger adsorption capacity and

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