Elastomeric Conductive Composites Based on Carbon Nanotube Forests

Shin, Min Jae; Oh, Jiyoung; Lima, Márcio Dias; Kozlov, Mikhail E.; Kim, Seon Jeong; Baughman, Ray H.

doi:10.1002/adma.200904270

Cited by 364 publications

(301 citation statements)

References 19 publications

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“…Another method is to embed or bond rigid and active electronic components into a soft rubbery polymer. 2,10,[17][18][19][20] For example, Shin et al 17 fabricated elastomeric conductive composites by the infiltration of multiwalled carbon nanotube forests with a polyurethane binder. Someya's group developed highly conductive, printable and stretchable composite films using ionic liquid, fluorinated copolymer and ultralong single-walled carbon nanotubes (SWNTs).…”

Section: Introductionmentioning

confidence: 99%

“…11,19 Although mechanical stretchability was successfully achieved, most of the above studies demonstrated that the resistance of the obtained composites increases rapidly with tensile strain (4100% increase of resistance at 100% strain). 5,10,11,17,18 Very recently, a new strategy was developed for generating stretchable conductors by backfilling an infinite connected network of conducting fillers (such as single-walled carbon nanotubesaerogels 21 or graphene foams 22 ) with an elastic polymer. Owing to the prefabricated three dimensional (3D) network structures, these composites showed a relatively high electrical conductivity and electromechanical stability under stretching and bending.…”

Section: Introductionmentioning

confidence: 99%

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Highly conductive and stretchable conductors fabricated from bacterial cellulose

et al. 2012

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Advanced materials that can remain electrically conductive under substantial elastic stretch and bending have attracted extensive interest recently owing to their broad application potentials, particularly for flexible electronics. Here, we have developed a simple and inexpensive method to fabricate highly conductive and stretchable composites using bacterial cellulose (BC) pellicles as starting materials, which can be produced in large amounts on an industrial scale via a microbial fermentation process. The prepared pyrolyzed BC (p-BC)/polydimethylsiloxane (PDMS) composites exhibit a high electrical conductivity of 0.20-0.41 S cm À1 , which is much higher than conventional carbon nanotubes and graphene-based composites. More importantly, the p-BC/PDMS composites that combine high stretchability with high conductivity show great electromechanical stability. Even after 1000 stretching cycles at the maximum strain of 80%, the resistance of the composites increased by only B10%. The resistance increased slightly (B4%) after 5000 bending cycles with a maximum bending radius of 1.0 mm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly conductive and stretchable conductors fabricated from bacterial cellulose

et al. 2012

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“…These materials can be produced through the heat treatment (pyrolysis) of aligned nanofiber polymer matrix nanocomposite (A-PNC) precursors, which are analogous to the APNCs reported elsewhere [15][16][17][18][19][20][21][22][23][24] . Such processing follows the typical synthesis routes of polymer derived ceramics [25][26][27][28] , but relies on capillary [15][16][17][18][19][20][21] or vacuum [21][22][23][24] assisted wetting of the aligned nanofibers rather than surfactant or functionalization assisted mixing. In order to manufacture aligned nanofiber carbon matrix nanocomposites (A-CMNCs) with tailored properties, the porosity of the matrix, which strongly influences its material properties, must be controlled.…”

Section: Introductionmentioning

confidence: 99%

Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites

Stein

Wardle

2014

Carbon

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Intrinsic and scale-dependent properties of carbon nanotubes (CNTs) have led aligned CNT architectures to emerge as promising candidates for next-generation multifunctional applications. Enhanced operating regimes motivate the study of CNT-based aligned nanofiber carbon matrix nanocomposites (CNT A-CMNCs). However, in order to tailor the material properties of CNT A-CMNCs, porosity control of the carbon matrix is required. Such control is usually achieved via multiple liquid precursor infusions and pyrolyzations. Here we report a model that allows the quantitative prediction of the CNT A-CMNC density and matrix porosity as a function of number of processing steps. The experimental results indicate that the matrix porosity of A-CMNCs comprised of ∼ 1% aligned CNTs decreased from ∼ 61% to ∼ 55% after a second polymer infusion and pyrolyzation. The model predicts that diminishing returns for porosity reduction will occur after 4 processing steps (matrix porosity of ∼ 51%), and that > 10 processing steps are required for matrix porosity < 50%. Using this model, prediction of the processing necessary for the fabrication of liquid precursor derived A-CMNC architectures, with possible application to other nanowire/nanofiber systems, is enabled for a variety of high value applications.

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“…For instance, several studies have shown that CNTs networks can be formed within polymers to yield highly conductive and stretchable strain sensors 22, 207, 208, 216, 218, 219. In one paramount study, SWCNTs were embedded into a stacked nanohybrid structure within polyurethane (PU)–PEDOT:PSS to provide a transparent, stretchable, and patchable strain sensor 208.…”

Section: Conductive Polymer Compositesmentioning

confidence: 99%

Blending Electronics with the Human Body: A Pathway toward a Cybernetic Future

et al. 2018

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At the crossroads of chemistry, electronics, mechanical engineering, polymer science, biology, tissue engineering, computer science, and materials science, electrical devices are currently being engineered that blend directly within organs and tissues. These sophisticated devices are mediators, recorders, and stimulators of electricity with the capacity to monitor important electrophysiological events, replace disabled body parts, or even stimulate tissues to overcome their current limitations. They are therefore capable of leading humanity forward into the age of cyborgs, a time in which human biology can be hacked at will to yield beings with abilities beyond their natural capabilities. The resulting advances have been made possible by the emergence of conformal and soft electronic materials that can readily integrate with the curvilinear, dynamic, delicate, and flexible human body. This article discusses the recent rapid pace of development in the field of cybernetics with special emphasis on the important role that flexible and electrically active materials have played therein.

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Elastomeric Conductive Composites Based on Carbon Nanotube Forests

Cited by 364 publications

References 19 publications

Highly conductive and stretchable conductors fabricated from bacterial cellulose

Highly conductive and stretchable conductors fabricated from bacterial cellulose

Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites

Blending Electronics with the Human Body: A Pathway toward a Cybernetic Future

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