Electric field and current assisted alignment of CNT inside polymer matrix and its effects on electrical and mechanical properties

Gupta, Pallavi; Rajput, Mohit; Singla, Nikhil; Kumar, Vijayesh; Lahiri, Debrupa

doi:10.1016/j.polymer.2016.02.025

Cited by 87 publications

(47 citation statements)

References 60 publications

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“…It was also reported that alignment of CNTs within the matrix can lead increase in the volume resistivity and thus decrease in the conductivity of matrix [52]. In a work by Gupta et al [2], they have aligned CNTs with current-assisted technique, which was led to the formation of shortest, continuous path for the flow of electrons, and thus formation of a highly anisotropic conductive path. Obtained results showed that current passage assisted alignment of CNTs can lead to significant 360% improvement in the conductivity for parallel direction than random distribution.…”

Section: Discussionmentioning

confidence: 99%

“…electrical and mechanical properties [2][3][4][5][6][7]. What is more, alignment of CNTs can be achieved via various methods such as electrical field [2-4, 7, 8], magnetic field [9], shear flow [10,11], mechanical force [12,13], and electrospinning [14,15], which electrical fieldinduced alignment is the simplest and most manageable method for alignment of CNTs within the matrix.…”

Section: Alignment Of Cnts Within the Matrix Can Boost Their Propertimentioning

confidence: 99%

“…Carbon nanotube (CNT) is a unique material with fantastic electrical, thermal, and mechanical properties, and since its discovery by Iijima in 1991 [1], global attention attracted toward it, and many researchers have evaluated the extraordinary properties of CNTs toward development of nanocomposites and sheets holding highly oriented CNTs with enhanced electrical and mechanical properties [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electric Field Induced Alignment of Carbon Nanotubes: Methodology and Outcomes

Amani¹,

Hashemi²,

Mousavi³

et al. 2018

Carbon Nanotubes - Recent Progress

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In the current chapter, achievement of aligned carbon nanotube (CNT) network within the matrix via various kinds of electric fields (AC and DC) was evaluated. In this case, alignment mechanism of CNTs within the matrix and two useful techniques for justification of CNT alignment throughout the matrix were examined and presented, respectively. Afterward, effective factors in matter of CNT alignment and applicable procedures for fabrication of nanocomposites containing aligned CNTs were studied and presented, respectively. At the end, significant effects of CNT alignment on overall properties of nanocomposites that include electrical and mechanical properties were evaluated. Achieved results revealed that alignment of CNTs within the matrix can lead to significant improvement in the electrical and mechanical properties of nanocomposites at the same filler loading compared with randomly distribution of CNTs within the matrix, while production steps and conditions can also highly affect the outcome data.

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Section: Discussionmentioning

confidence: 99%

Section: Alignment Of Cnts Within the Matrix Can Boost Their Propertimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electric Field Induced Alignment of Carbon Nanotubes: Methodology and Outcomes

Amani¹,

Hashemi²,

Mousavi³

et al. 2018

Carbon Nanotubes - Recent Progress

View full text Add to dashboard Cite

show abstract

“…Arguin et al [80] have used electric fields of 40 kV/m, which can lead to the alignment of MWCNTs in an epoxy resin system. Gupta et al [81] employed electric field and current-assisted alignment of CNTs in a polyvinylidene fluoride matrix. A promising methodology [82], which is discussed in more detail in Section 5, involves the use of an intermediate state specifically electrospinning.…”

Section: The Challenge With Polymer Nanocomposites: Dispersion Alignmentioning

confidence: 99%

“…Measurements made by Gupta et al [81] on the electrical conductivity of polyvinylidene fluoride (PVDF), MWCNT composite materials exhibited improved electrical conductivity with improved alignment of the MWCNT filler particles. Five films of the composite materials were prepared with a solution cast method.…”

Section: Some Selected Recent Examples Of Polymer/cnt Compositesmentioning

confidence: 99%

Highly Anisotropic Polymer Composites Based on Carbon Nanotubes

Mitchell¹,

Davis²,

Mohan³

et al. 2018

Carbon Nanotubes - Recent Progress

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Properties of polymers can be optimized through processing methods or by the addition of nanofillers. Carbon nanotubes (CNTs) have gained attention due to their promising behavior. Carbon nanotubes are essentially a sheet of graphene wrapped into a cylindrical shape with either a single or multiple walls. Tube diameters are approximately nanometres, but they can be micrometres in length. Due to the unique properties of nanotubes, they offer promise in composite materials with current research dedicated to embedding them in a polymer matrix. If improvements are to be made , the nanotubes need to be in an aligned configuration. This presents challenges due to the strong intermolecular forces that cause nanotube agglomeration leading to poor quality dispersion and random CNT orientations. Thus, there are two particular challenges to the formation of polymer composites based on CNTs: dispersion and alignment, and these are the focus of this chapter. We consider recent developments in the synthesis of carbon nanotubes and their properties. Next, we detail the challenges of dispersion and alignment that are presented in the preparation of polymer/CNT composites. Finally, we review the literature to identify progress made in preparing high performance polymer/CNT composites and their properties and present one particular solution.

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Additive Manufacturing of Polymer Matrix Composite Materials with Aligned or Organized Filler Material: A Review

Niendorf

Raeymaekers

2021

Adv Eng Mater

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The ability to fabricate polymer matrix composite materials with continuous or discontinuous filler material, oriented in a user-specified direction, enables implementing designer material properties, such as anisotropic mechanical, thermal, and electrical properties. Conventional fabrication methods rely on a mold, which limits specimen geometry and is difficult to implement. In contrast, additive manufacturing, including fused filament fabrication or fused deposition modeling, direct ink writing, or stereolithography, combined with a method to align filler material such as a mechanical force or an electric, magnetic, shear force, or ultrasound wave field, enables 3D printing polymer matrix composite material specimens with complex geometry and aligned filler material, without the need for a mold. Herein, we review the combinations of fabrication and filler material alignment methods used to fabricate polymer matrix composite materials, in terms of operating and design parameters including size, resolution, print speed, filler material alignment time, polymer matrix and filler material requirements, and filler manipulation requirements. The operating envelope of each fabrication method is described and their advantages, disadvantages, and limitations are discussed. Finally, different combinations of 3D printing and filler material alignment methods in the context of important engineering applications, such as structural materials, flexible electronics, and shape-changing materials, are illustrated.

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Electric field and current assisted alignment of CNT inside polymer matrix and its effects on electrical and mechanical properties

Cited by 87 publications

References 60 publications

Electric Field Induced Alignment of Carbon Nanotubes: Methodology and Outcomes

Electric Field Induced Alignment of Carbon Nanotubes: Methodology and Outcomes

Highly Anisotropic Polymer Composites Based on Carbon Nanotubes

Additive Manufacturing of Polymer Matrix Composite Materials with Aligned or Organized Filler Material: A Review

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