Physical properties of carbon nanotube sheets drawn from nanotube arrays

Pöhls, Jan-Hendrik; Johnson, Michel B.; White, Mary Anne; Malik, Rachit; Ruff, Brad; Jayasinghe, Chaminda; Schulz, Mark J.; Shanov, Vesselin

doi:10.1016/j.carbon.2012.04.067

Cited by 83 publications

(52 citation statements)

References 51 publications

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“…Therefore, recent studies related to CNTs have emphasized obtaining control of the engineering of organized architectures with determined orientations such as vertically aligned CNT arrays [8][9][10]. The organized CNT materials such as aligned CNT sheets can be produced from vertically aligned CNT arrays [11][12][13]. The easiest means of creating long-aligned CNT sheets from the CNT arrays is the use of a solid-state drawing technique [11].…”

Section: Introductionmentioning

confidence: 99%

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Effects of CNT diameter on mechanical properties of aligned CNT sheets and composites

Nam

Goto

Yamaguchi

et al. 2015

Composites Part A: Applied Science and Manufacturing

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a b s t r a c tDrawing, winding, and pressing techniques were used to produce horizontally aligned carbon nanotube (CNT) sheets from free-standing vertically aligned CNT arrays. The aligned CNT sheets were used to develop aligned CNT/epoxy composites through hot-melt prepreg processing with a vacuum-assisted system. Effects of CNT diameter change on the mechanical properties of aligned CNT sheets and their composites were examined. The reduction of the CNT diameter considerably increased the mechanical properties of the aligned CNT sheets and their composites. The decrease of the CNT diameter along with pressing CNT sheets drastically enhanced the mechanical properties of the CNT sheets and CNT/epoxy composites. Raman spectra measurements showed improvement of the CNT alignment in the pressed CNT/epoxy composites. Research results suggest that aligned CNT/epoxy composites with high strength and stiffness are producible using aligned CNT sheets with smaller-diameter CNTs.

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Section: Introductionmentioning

confidence: 99%

“…The easiest means of creating long-aligned CNT sheets from the CNT arrays is the use of a solid-state drawing technique [11]. This technique has been upgraded towards the goal of providing a continuous process for the solid-state fabrication of long-aligned and multi-ply CNT sheets [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effects of CNT diameter on mechanical properties of aligned CNT sheets and composites

Nam

Goto

Yamaguchi

et al. 2015

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

show abstract

“…As shown in Fig. 1A, the dry-spun CNT sheets (15 cm length) were attached to a Teflon™ belt and were densified using acetone [21]. Densification of CNT sheets improves mechanical and electrical properties maintaining the longitudinal nanotube orientation and the original dimensions.…”

Section: Resultsmentioning

confidence: 99%

“…mechanical strength [21]. In electrochemical point, CNT particles can promote fast electron-transfer and improve reversibility of electrochemical reaction [22].…”

Section: Introductionmentioning

confidence: 99%

“…One of the promising scale-up methods was recently established by deposition of multiple layers of dry-spun CNT sheets [27]. Spinnable CNT arrays grown by chemical vapor deposition (CVD) allow for the formation of a continuous web from one edge of the array, comprising of highly aligned multi-walled CNTs [21,28,29]. This free-standing web is laid on top of itself multiple times to produce an aligned CNT sheets without the need of any polymer binder.…”

Section: Introductionmentioning

confidence: 99%

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