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Nanoscience and Technology: An International Journal

Publicado 4 números por año

ISSN Imprimir: 2572-4258

ISSN En Línea: 2572-4266

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.3 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.7 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00023 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.11 SJR: 0.244 SNIP: 0.521 CiteScore™:: 3.6 H-Index: 14

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FORMATION OF CARBON NANOTUBE ROPES AND THEIR EFFECT ON THE PROPERTIES OF POLYMER NANOCOMPOSITES

Volumen 10, Edición 1, 2019, pp. 89-95
DOI: 10.1615/NanoSciTechnolIntJ.2019030617
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SINOPSIS

Carbon nanotubes represent a unique nanofiller with exceptional mechanical properties and a high degree of anisotropy. These characteristics determine the presence of two types of aggregation for such a nanofiller, namely, the formation of ropes (bundles) of individual nanotubes and formation of their annular structures. Estimates made within the percolation model have shown that each rope of carbon nanotubes in polyamide-6-based nanocomposites consists of several hundred individual nanotubes. In turn, the formation of such ropes has a critical effect on formation of annular structures of carbon nanotubes, since an increase in the diameter of ropes results in an increase in the radius of these annular structures. This effect determines both the level of interfacial adhesion in polymer nanocomposites and their final mechanical characteristics. It has been shown that an increase in the number of carbon nanotubes per one rope reduces its specific surface and the fractal dimensionality of the surface of ropes, which ultimately determines the decrease in the reinforcement degree of polymer/carbon nanotubes nanocomposites. The thermodynamic analysis of carbon nanotubes interactions has shown that these interactions are significantly higher than similar interactions between polymer macromolecules. This effect determines the formation of carbon nanotube ropes already at the stage of their production. The obtained results suggest that individual carbon nanotubes with a large radius of their annular structures can produce the greatest effect in reinforcement of polymer nanocomposites.

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