October 9, 2019
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Article
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Understanding cooperative loading in carbon nanotube fibres through in-situ structural studies during stretching

Publicated to: CARBON. 156 430-437 - 2020-01-01 156(), DOI: 10.1016/j.carbon.2019.09.070

Authors:

Fernandez-Toribio, Juan C; Mikhalchan, Anastasiia; Santos, Cleis; Ridruejo, Alvaro; Vilatela, Juan J
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Affiliations

IMDEA Mat Inst Eric Kandel, 2 Tecnogetafe, Madrid 28906, Spain - Author
IMDEA Materials Institute - Author
Univ Politecn Madrid, Dept Mat Sci, ETSI Caminos, C Prof Aranguren 3, Madrid, Spain - Author
Universidad Politécnica de Madrid - Author
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Abstract

© 2019 Elsevier Ltd Carbon nanotube (CNT) fibres are firmly established as a new high-performance fibre, but their tensile mechanical properties remain a relatively small fraction of those of the constituent CNTs. Clear structure-property relations and accurate mechanical models are pressing requirements to bridge this gap. In this work we analyse the structural evolution and molecular stress transfer in CNT fibres by performing in-situ synchrotron wide- and small-angle X-ray scattering and Raman spectroscopy during tensile deformation. The results show that CNT fibres can be accurately described as network of bundles that slide progressively according to the initial orientation distribution function of the material following a Weibull distribution. This model decouples the effects of CNT alignment and degree of cooperative loading, as demonstrated for fibres produced at different draw ratios. It also helps explain the unusually high toughness (fracture energy) of CNT fibres produced by the direct spinning method, a key property for impact resistance in structural materials, for example.
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Keywords

BehaviorCnt fibreIn-situMechanical propertiesModelModulusOrientationPolymerRamanShearStrengthTensile deformationWaxs/saxsWeibullYarn

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal CARBON due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 42/334, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.02, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-27, the following number of citations:

  • WoS: 22
  • Scopus: 23
  • Google Scholar: 26
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-27:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 31.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 31 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 2.
  • The number of mentions on the social network X (formerly Twitter): 3 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/93191/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 23
  • Downloads: 24
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Fernández-Toribio J) .

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Project objectives

Los objetivos perseguidos en esta aportación se centran en profundizar en la comprensión de las fibras de nanotubos de carbono (CNT) durante su deformación mecánica. Se pretende analizar la evolución estructural y la transferencia molecular de tensión en las fibras CNT mediante técnicas in situ como la dispersión de rayos X y espectroscopía Raman. Asimismo, se busca caracterizar el comportamiento de las fibras como una red de haces que se deslizan según la distribución de orientación inicial, modelada mediante una distribución de Weibull. Otro objetivo es decouplar los efectos de la alineación de CNT y el grado de carga cooperativa en las fibras con diferentes ratios de estirado. Finalmente, se pretende explicar la alta tenacidad observada en fibras producidas por el método de hilado directo, relevante para la resistencia al impacto.
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Most relevant results

El estudio presenta resultados clave sobre la carga cooperativa en fibras de nanotubos de carbono (CNT) mediante técnicas in situ durante el estiramiento. Se demuestra que las fibras de CNT pueden describirse como una red de haces que se deslizan progresivamente según una función de distribución de orientación inicial con distribución de Weibull. Se logra desacoplar los efectos de la alineación de CNT y el grado de carga cooperativa, validado en fibras con diferentes relaciones de estiramiento. Además, se explica la elevada tenacidad de las fibras producidas por el método de hilado directo, destacando su importancia para la resistencia al impacto en materiales estructurales.
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