A percolation network model to predict the electrical property of flexible CNT/PDMS composite films fabricated by spin coating technique

Wu, Di; Wei, Mengni; Li, Rong; Xiao, Tao; Gong, Shen; Xiao, Zhu; Zhu, Zheng H.; Li, Zhou

doi:10.1016/j.compositesb.2019.107034

Cited by 33 publications

(14 citation statements)

References 29 publications

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“…Free-standing CNT films may be obtained using one of the numerous methods available [24] such as dip-coating [25], spin-coating [26], spray-coating [27], membrane filtration [28], printing [29], and electrophoretic deposition [30]. What all these methods have in common is that they require proper dispersion of CNTs.…”

Section: Introductionmentioning

confidence: 99%

Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

et al. 2019

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Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral.

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Section: Introductionmentioning

confidence: 99%

Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

et al. 2019

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“…PDMS demonstrates a little infiltration into its porous surface (Figure 5) under hot pressing, resulting in strong bonding between CNM and PDMS layers in the anchoring form 54 and interface bonding. 55 Such bonding can be seen in Figure 14a−f by comparing the morphology and silicon element mapping distribution at the cross sections of CNM-16 and EM-16. The excellent bonding is beneficial for the electric heating stability and flexibility, as well as strength to the EM for its application.…”

Section: ■ Results and Discussionmentioning

confidence: 93%

“…After encapsulation using PDMS, EM-16 manifested a dense structure in its cross section shown in Figure a,b, with the CNTs and NFC interlocked together due to their similar fiber morphology. PDMS demonstrates a little infiltration into its porous surface (Figure ) under hot pressing, resulting in strong bonding between CNM and PDMS layers in the anchoring form and interface bonding . Such bonding can be seen in Figure a–f by comparing the morphology and silicon element mapping distribution at the cross sections of CNM-16 and EM-16.…”

Section: Resultsmentioning

confidence: 99%

Steady and Robust CNTs-Based Electric Heating Membrane Fabricated by Addition of Nanocellulose and Hot-Press Encapsulation

Zou

Zhuo

et al. 2021

Langmuir

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Herein, a type of biomass-based electric heating membrane (EHM) with excellent stability was fabricated; this was achieved by incorporating carbon nanotubes (CNTs) into the nanofibrillated cellulose (NFC) as a natural dispersant and a biological substrate, as well as via the control of ultrasonic dispersion, grammage, and encapsulation using poly(dimethylsiloxane) (PDMS) with hot pressing. NFC entangles with CNTs in the form of an intertwined network and non-covalent interactions to fabricate a flexible EHM with steady electric heating performance; this formation is attributed to not only their similar morphology and surface-active groups but also the use of NFC that avoids additional disturbances in the overlapped interface among CNTs as far as possible. The obtained steady resistance varies as low as 5.1% under energized operation. In the encapsulated EHM (EM), PDMS was anchored on its surface by using hot pressing and an intertwined structure to enhance flexibility and robustness. The encapsulated membrane can be used in low-voltage applications, which require flexibility, waterproofing, and insulation.

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“…Since the volume fraction (Vm1) of the medium in the subdomain is dependent on not only the volume fraction but also the aspect ratio of inclusions, the ETC calculated using Eq. ( 25) not only includes the effect of the interfacial thermal resistance but also the effect from the aspect ratio and percolation of inclusions; the latter has been discussed in the calculation of the effective electrical conductivity of composites [41,43,44,45,46]. Fig.…”

Section: Effective Thermal Properties Of Two-phase Composite Materialsmentioning

confidence: 99%

Heat transfer modelling of carbon nanotube reinforced composites

Yuan

Dassekpo

et al. 2021

Composites Part B: Engineering

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A percolation network model to predict the electrical property of flexible CNT/PDMS composite films fabricated by spin coating technique

Cited by 33 publications

References 29 publications

Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Steady and Robust CNTs-Based Electric Heating Membrane Fabricated by Addition of Nanocellulose and Hot-Press Encapsulation

Heat transfer modelling of carbon nanotube reinforced composites

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