A comprehensive evaluation of piezoresistive response and percolation behavior of multiscale polymer-based nanocomposites

Haghgoo, Mojtaba; Hassanzadeh-Aghdam, Mohammad Kazem; Ansari, R.

doi:10.1016/j.compositesa.2019.105735

Cited by 50 publications

(31 citation statements)

References 46 publications

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“…Polymer nanocomposites are now be utilized in high‐tech engineering fields such as electronic devices, highly sensitive strain sensors and photovoltaic cells, 1 sophisticated surgery tools, 2 switching memory for information storage, 3 body armour, 4 high strength scaffolds for regenerative medicine and tissue engineering 5 . However, the problem of environmental pollution as a result of non‐degradable plastic‐related wastes arouse from the technology is worrisome 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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The global concern over the environmental protection and bio‐sustainability of plastic waste materials has prompted a vibrant search for renewable and biodegradable polymers in the academia and industrial sectors. Amidst other biopolymers, poly(lactic acid) (PLA) is identified as the most promising thermoplastic aliphatic polyester. PLA is derived from agricultural products with unique physical and mechanical properties that are comparable with the conventional petroleum‐derived polymers. Yet, some of the properties are insufficient for advanced materials applications. Rigid nanoparticles are incorporated in the PLA matrix to alleviate its properties for specific high‐performance applications. Here, we report various approaches of preparing functional PLA nanocomposites with emphasis on the strengths and weaknesses of each of the methods, as well as the achieved properties enhancement for a targeted application. Designing high‐performance PLA nanocomposite involves careful selection of the most appropriate nanofillers or combinations of nanofillers, preparation technique and processing parameters. Besides multi‐walled carbon nanotubes (CNT) and montmorillonite (MMT) that are prominent as nucleating agents to achieve high thermal and mechanical properties, other nanofillers like silver nanoparticles (AgNP) play critical roles in improving antibacterial and high‐performance properties of PLA.

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Section: Introductionmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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“…Garboczi 18 designed percolation phase diagrams for multi‐phase models. Some studies 19‐24 have used the percolation threshold to monitor material performances. As the weight loss rate of Y 2 O 3 ‐Al 2 O 3 depended on the removal rates of AlF 3 and YF 3 , the erosion process was simulated as a two‐phase percolation model.…”

Section: Resultsmentioning

confidence: 99%

Plasma etching behavior of yttrium‐aluminum oxide composite ceramics

Tan

Chen²,

Zhu³

et al. 2021

Int J Applied Ceramic Tech

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In order to get a general regularity of erosion performance in alumina‐strengthened yttria ceramics, High‐quality yttrium‐aluminum oxide composite ceramics with different alumina/yttria molar ratios were fabricated, and the as‐prepared specimens were named Y2O3, YAG, YAGA, and Al2O3. The erosion behavior of the ceramics was examined and explained. The etching morphologies of the ceramics revealed that the multi‐phase composite ceramic (YAGA) was etched selectively, whereas the single‐phase ceramics were corroded homogeneously. The weight loss rate of the ceramics after etching was not proportional to the Al2O3 content, and it conformed to the percolation theory. As the alumina content in yttrium‐aluminum oxide composite ceramics was below the minimum value of percolation transition in two‐phase system the erosion resistance of the strengthened composite ceramics demonstrated excellent as well yttria ceramics.

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“…Fang et al [13] simulated the percolative behavior and tunneling resistance of electrical conductivity in the CNT/polymer nanocomposite via the Monte Carlo method. Haghgoo et al [14] established an analytical model to evaluate the piezoresistive response and corresponding percolation behavior of multiscale CNT/polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Dual percolations of electrical conductivity and electromagnetic interference shielding in progressively agglomerated CNT/polymer nanocomposites

Xia

Weng

2021

Mathematics and Mechanics of Solids

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Recent experiments have revealed two distinct percolation phenomena in carbon nanotube (CNT)/polymer nanocomposites: one is associated with the electrical conductivity and the other is with the electromagnetic interference (EMI) shielding. At present, however, no theories seem to exist that can simultaneously predict their percolation thresholds and the associated conductivity and EMI curves. In this work, we present an effective-medium theory with electrical and magnetic interface effects to calculate the overall conductivity of a generally agglomerated nanocomposite and invoke a solution to Maxwell’s equations to calculate the EMI shielding effectiveness. In this process, two complex quantities, the complex electrical conductivity and complex magnetic permeability, are adopted as the homogenization parameters, and a two-scale model with CNT-rich and CNT-poor regions is utilized to depict the progressive formation of CNT agglomeration. We demonstrated that there is indeed a clear existence of two separate percolative behaviors and showed that, consistent with the experimental data of poly-L-lactic acid (PLLA)/multi-walled carbon nanotube (MWCNT) nanocomposites, the electrical percolation threshold is lower than the EMI shielding percolation threshold. The predicted conductivity and EMI shielding curves are also in close agreement with experimental data. We further disclosed that the percolative behavior of EMI shielding in the overall CNT/polymer nanocomposite can be illustrated by the establishment of connective filler networks in the CNT-poor region. It is believed that the present research can provide directions for the design of CNT/polymer nanocomposites in the EMI shielding components.

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A comprehensive evaluation of piezoresistive response and percolation behavior of multiscale polymer-based nanocomposites

Cited by 50 publications

References 46 publications

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Plasma etching behavior of yttrium‐aluminum oxide composite ceramics

Dual percolations of electrical conductivity and electromagnetic interference shielding in progressively agglomerated CNT/polymer nanocomposites

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