Sustained Growth of Ultralong Carbon Nanotube Arrays for Fiber Spinning

Li, Qingwen; Zhang, Xiefei; DePaula, R.F.; Zheng, Lianxi; Zhao, Yaohua; Stan, Liliana; Holesinger, T. G.; Arendt, P. N.; Peterson, D. E.; Zhu, Yuntian

doi:10.1002/adma.200601344

Cited by 336 publications

(252 citation statements)

References 30 publications

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“…The unidirectional CNT sheets used in this study were converted from superaligned CNT arrays that were synthesized by a chemical vapor deposition method [11]. The CNTs were multi-walled (MWNTs) with outer diameter of 7-9 nm and 4-6 walls (as shown in the Supplementary online material).…”

Section: Fabrication Of Cnt Composite Sheets By Stretchwinding Processmentioning

confidence: 99%

“…Since the report of a dry-drawing method in 2002 [10], much effort has been focused on scaling up the growth of superaligned CNT arrays [11][12][13]. Due to their high-purity, high-quality and ordered structure, the superaligned CNT arrays can be converted into continuous fibers or sheets in the dry state [2,10,11,[14][15][16][17][18].…”

mentioning

confidence: 99%

“…Due to their high-purity, high-quality and ordered structure, the superaligned CNT arrays can be converted into continuous fibers or sheets in the dry state [2,10,11,[14][15][16][17][18]. These fibers and sheets, within which the nanotubes possess a high degree of alignment, have also been incorporated into polymer matrices to make strong CNT/polymer composite fibers [19][20][21].…”

mentioning

confidence: 99%

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Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Wang

Yong

et al. 2012

Materials Research Letters

138

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Section: Fabrication Of Cnt Composite Sheets By Stretchwinding Processmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Wang

Yong

et al. 2012

Materials Research Letters

138

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“…Millimeter tall forests of SWNTs and/or MWNTs (multi-walled carbon nanotubes) are now regularly synthesized [1,3,[5][6][7][8][9][10][11][12][13][14][15][16][17] and research has shifted focus from how nanotube growth is initiated to the increasingly important question of how nanotube growth terminates [15,18,19]. Several reports demonstrate that nanotube forests grow at an initially rapid rate which drops off either gradually [7,20,21] or suddenly [15,22,23].…”

Section: Introductionmentioning

confidence: 99%

Distinct termination morphologies for vertically aligned carbon nanotube forests

et al. 2009

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Distinct termination morphologies for vertically aligned carbon nanotube forests Vinten, P.; Marshall, P.; Lefebvre, J.; Finnie, P.Contact us / Contactez nous: nparc.cisti@nrc-cnrc.gc.ca. Abstract Vertically aligned carbon nanotube forests, including single-walled nanotubes, are imaged optically as they grow in situ from cobalt/alumina catalyst using water-assisted acetylene chemical vapor deposition. Three distinct termination morphologies are identified and investigated optically and via scanning electron microscopy. Quantitative growth dynamics are extracted and show gradual deceleration and sudden termination of growth. The termination morphology is discussed in terms of the balance of forces within the forest. We speculate that sudden termination is a collective effect arising from an imbalance in these forces.

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“…Compared with agglomerated S/D/MWCNTs, it is much easier to fabricate different CNT macroscopic structures (such as fluffy CNTs [27], CNT fibers [28][29][30], and CNT films [30]) with aligned CNTs. They also exhibit excellent performance when used as filler for polymer reinforcement to improve the electronic, mechanical, and thermal properties of polymers [31].…”

Section: Aligned Cnt Productionmentioning

confidence: 99%

A review of the large-scale production of carbon nanotubes: The practice of nanoscale process engineering

et al. 2011

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Carbon nanotubes (CNTs) are nanomaterials that have attracted great research interest because of their unique properties and promising applications. The controllable synthesis of CNTs is a precondition for their broad application. In this review, we consider nanoscale process engineering and assess recent progress in the mass production of ultra-long, inexpensive CNTs with good alignment as well as tunability in wall number and diameter for fundamental and engineering science applications across multiple scales. Cutting-edge nanoscale process engineering research in the areas of physics, chemistry, materials, engineering, ecology, and social science will allow us to obtain high added value and multi-functional advanced CNTs. The synthesis of CNTs with controllable chirality, good-alignment, and predetermined sizes and lengths still presents great challenges. Through multidisciplinary scientific research, advanced CNT-based materials will promote the development of a sustainable society. According to the wall number of a CNT, it can be classified as a SWCNT, double-walled CNT (DWCNT), triple-walled CNT (TWCNT), or multi-walled CNT (MWCNT). Because of the covalent sp 2 bonds between individual carbon atoms, a nanotube can have a Young's modulus between 1.2-5.5 TPa, a tensile strength about a hundred times greater than that of steel, and can tolerate large strains before mechanical failure. A CNT can be a metal, semiconductor, or small-gap semiconductor. The state of the CNT depends heavily on the (m, n) indices, and, therefore, on the diameter and chirality. CNTs also possess tunable surfaces characteristics, well-defined hollow interiors, and high biocompatibility with living systems. Based on these properties, many potential applications, including both large-volume applications (such as conductive, electromagnetic, microwave absorbing, high-strength composites; super capacitor, or battery electrodes; catalyst and catalyst support; field emission displays; and transparent conducting films) and limited-volume applications (such as scanning probe tips; drug delivery systems; electronic devices; sensors; and actuators) have been proposed [2]. Controllable mass production of CNTs with the desired structures and properties is essential for future applications. In the past 20 years, arc discharge, laser ablation, and chemical vapor deposition (CVD) methods have been developed to produce CNTs in sizeable quantities. In CVD methods, the catalytic decomposition of a carbon feedstock into carbon and hydrogen atoms is initiated on an active catalyst surface, where the tubular CNTs grown. CVD growth can be achieved under mild conditions (such as normal pressure

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Sustained Growth of Ultralong Carbon Nanotube Arrays for Fiber Spinning

Cited by 336 publications

References 30 publications

Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Distinct termination morphologies for vertically aligned carbon nanotube forests

A review of the large-scale production of carbon nanotubes: The practice of nanoscale process engineering

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