Segregated conductive network of MWCNT in PA12/PA6 composites: Electrical and rheological behavior

Arboleda-Clemente, Laura; Ares‐Pernas, Ana; García, X.; Dopico-Garcı́a, M.S.; Abad, M. J.

doi:10.1002/pc.23865

Cited by 20 publications

(28 citation statements)

References 35 publications

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“…Laura Arboleda‐Clemente et al designed new CNT nanocomposites—with an immiscible blend of polyamides as a matrix—that had good electrical conductivity and a low percolation threshold. They used rheological tests and alternating current (AC) measurements to determine the percolation threshold of nanocomposites.…”

Section: Polyamide Nanocomposites Based On Carbon Nanofillersmentioning

confidence: 99%

Polyamide/Carbon Nanoparticles Nanocomposites: A Review

2016

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This review is designed to be a comprehensive source for polyamide (PA) nanocomposite research, including fundamental structure/property relationships, manufacturing techniques, and applications of these materials. This work presents the scientific framework for the advances in PA nanocomposite containing carbon nanofiller, and different methods applied in order to synthesis them. This review focuses on the scientific principles and mechanisms in relation to the methods of processing and manufacturing. A comprehensive discussion on technology, modeling, characterization, processing, manufacturing, and applications have been done. The processing and properties of PA nanocomposites with carbon nanofillers are investigated. In addition, the mechanical properties and morphology changes of PA with the incorporation of nanoparticles are described. POLYM. ENG. SCI., 57:475-494, 2017.

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Section: Polyamide Nanocomposites Based On Carbon Nanofillersmentioning

confidence: 99%

Polyamide/Carbon Nanoparticles Nanocomposites: A Review

2016

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“…From electrical and rheological measurements, a low percolation threshold was determined, probably due to the high aspect ratio of the nanotubes which is kept after the composite processing, and to the preferential localization of CNTs in the polyamides interfaces (the latter was confirmed by transmission electron microscopy [TEM]). 17 Other authors found an improvement in electrical behavior using conductive polymer composites with segregated networks. 18 The water uptake at saturation of nanocomposites decreases with respect to the pristine PA6 because of the diffusion of water molecules into the polymer matrix was slower.…”

Section: Introductionmentioning

confidence: 98%

Role of rheology in tunning thermal conductivity of polyamide 12/polyamide 6 composites with a segregated multiwalled carbon nanotube network

Arboleda-Clemente

García-Fonte

Abad

et al. 2017

Journal of Composite Materials

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Effect of multiwalled carbon nanotubes in thermal conductivity of an immiscible blend of polyamides, 50/50 (wt%/wt%) polyamide 12/polyamide 6, was analyzed as function of nanofiller amount and temperature. Effect of the molding temperature in the structure of conductive network was investigated by rheology. Data show that 5 vol% multiwalled carbon nanotubes caused an increase of 41% in thermal diffusivity and 78% in thermal conductivity respect to polyamide blend values. Thermal conductivity improvement could be described by percolation theory, with a low threshold composition (φc = 0.09 vol% carbon nanotube). Fitting parameters obtained from Agari’s adjustment model show that polyamides structure is not affected by carbon nanotubes and the nanofillers can easily form conductive paths in the polyamide 12/polyamide 6 matrix. The temperature increase facilitates nanofiller dispersion causing the formation of a denser carbon nanotube network and rising the thermal diffusivity of carbon nanotube composites with low percolation level, as was proved on annealed samples at 255℃.

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“…The brittleness was indicated by SEM images of the tensile fracture surfaces, as shown in Figure 9(a–d). The tensile modulus of the PP/carbon composites increased with the carbon content owing to the PP/carbon network formation, which restricted the movement of the PP chains 56 . Although the addition of carbon increases the tensile properties with low concentrations, at high carbon loading, the tensile strength has reduced.…”

Section: Resultsmentioning

confidence: 99%

Utilization of polyethylene terephthalate waste as a carbon filler in polypropylene matrix: Investigation of mechanical, rheological, and thermal properties

Poulose

Elnour

Kumar

et al. 2020

J of Applied Polymer Sci

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Polyethylene terephthalate (PET) waste was converted into carbon and the feasibility of utilizing it as a reinforcing filler material in a polypropylene (PP) matrix was investigated. The carbon produced by the pyrolysis of waste PET at 900°C in nitrogen atmosphere contains high carbon content (>70 wt%). PP/carbon composites were produced by melt blending process at varying loading concentrations. Scanning electron microscopy images at the fractured surface revealed that the carbon filler has better compatibility with the PP matrix. The mechanical, thermal, and rheological properties and surface morphology of the prepared composites were studied. The thermogravimetric analysis studies showed that the thermal stability of the PP/carbon composites was enhanced from 300 to 370°C with 20 wt% of carbon. At lower angular frequency (0.01 rad/s), the storage modulus (G′) of PP was 0.27 Pa and those of PP with 10 and 20 wt% carbon was 4.06 and 7.25 Pa, respectively. Among the PP/carbon composite prepared, PP with 5 wt% carbon showed the highest tensile strength of 38 MPa, greater than that of neat PP (35 MPa). The tensile modulus was enhanced from 0.9 to 1.2 GPa when the carbon content was increased from 0 to 20 wt%.

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Segregated conductive network of MWCNT in PA12/PA6 composites: Electrical and rheological behavior

Cited by 20 publications

References 35 publications

Polyamide/Carbon Nanoparticles Nanocomposites: A Review

Polyamide/Carbon Nanoparticles Nanocomposites: A Review

Role of rheology in tunning thermal conductivity of polyamide 12/polyamide 6 composites with a segregated multiwalled carbon nanotube network

Utilization of polyethylene terephthalate waste as a carbon filler in polypropylene matrix: Investigation of mechanical, rheological, and thermal properties

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