Characterization And Alignment Of Carbon Nanofibers Under Shear Force In Microchannel

Abstract

This work presents a novel method to align CNFs by using shear forces in microchannels. Effect of two different microchannel sizes (1 mm × 0.1 mm and 1 mm × 0.2 mm) on CNFs alignment is investigated. SEM images of CNFs preform display significant alignment by both microchannels, which can be interpreted using a second-order alignment tensor and a manual angle meter. In the second-order alignment tensor description, an elongated ellipse can signify high degree of alignment in the direction of the major axis. When the microchannel size is 1 mm × 0.2 mm, the lengths of major and minor axes of the ellipse are 0.982 to 0.018. An angle meter manually shows that 85% of the CNFs are aligned in the direction between 60° and 90° when the microchannel is 1 mm × 0.2 mm. Both methods can demonstrate that better alignment of CNFs can be obtained using the 1 mm × 0.2 mm microchannel.

Publication Date

1-1-2016

Publication Title

Journal of Nanomaterials

Volume

2016

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1155/2016/1052478

Socpus ID

84962675850 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84962675850

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