Attaining high electrical conductivity and toughness in PA6 by combined addition of MWCNT and rubber

González, I.; Eguiazábal, J. I.; Nazábal, J.

doi:10.1016/j.compositesa.2012.03.013

Cited by 29 publications

(31 citation statements)

References 40 publications

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“…The overall increase in Young's modulus is caused by a decrease in the molecular mobility of the polymeric chains, which is also supported by the T g increase shown by DMTA. The large interfacial area-to-dispersed phase volume ratio characteristic of well-dispersed CNTs facilitates the presence of interactions between the polymer and the filler [36]. When the three systems were compared, the maximum modulus increase was observed in the PA410/PA6/CNT system, where a 10.3% increase was observed with a 4 wt% CNT content, followed by the PA410/CNT(2) system (an increase of 11% with a 6 wt% CNT content), and the PA410/CNT(1) system, where a 4.5% increase with a 6 wt% CNT content was observed.…”

Section: Electrical Propertiesmentioning

confidence: 99%

The Effect of the Preparation Method and the Dispersion and Aspect Ratio of CNTs on the Mechanical and Electrical Properties of Bio-Based Polyamide-4,10/CNT Nanocomposites

et al. 2019

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Bio-based polymeric nanocomposites (NCs) with enhanced electrical conductivity and rigidity were obtained by adding multi-walled carbon nanotubes (CNTs) to a commercial bio-based polyamide 4,10 (PA410). Two different types of commercial CNTs (Cheap Tubes and Nanocyl NC7000 TM ) and two different preparation methods (using CNTs in powder form and a PA6-based masterbatch, respectively) were used to obtain melt-mixed PA410/CNT NCs. The effect of the preparation method as well as the degree of dispersion and aspect ratio of the CNTs on the electrical and mechanical properties of the processed NCs was studied. Superior electrical and mechanical behavior was observed in the Nanocyl CNTs-based NCs due to the enhanced dispersion and higher aspect ratio of the nanotubes. A much more significant reduction in aspect ratio was observed in the Cheap Tubes CNTs than in the Nanocyl CNTs. This was attributed to the fact that the shear stress applied during melt processing reduced the length of the CNTs to similar lengths in all cases, which pointed to the diameter of the CNTs as the key factor determing the properties of the NCs. The PA6 in the ternary PA410/PA6/CNT system led to improved Young's modulus values because the reinforcing effect of CNTs was greater in PA6 than in PA410.

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Section: Electrical Propertiesmentioning

confidence: 99%

The Effect of the Preparation Method and the Dispersion and Aspect Ratio of CNTs on the Mechanical and Electrical Properties of Bio-Based Polyamide-4,10/CNT Nanocomposites

et al. 2019

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“…The development of ternary polymer/polymer/CNT NCs is an optimum way of obtaining new materials with increased electrical conductivity and tailored mechanical properties, since they combine the technology of polymer blends with that of polymer/CNT NCs . PLA and PCL form a very promising polymer pair for modification by CNTs, since they produce fully biodegradable polymer blends combining good stiffness, strength and ductility .…”

Section: Introductionmentioning

confidence: 99%

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Urquijo¹,

Dagréou

Guerrica-Echevarría³

et al. 2017

J of Applied Polymer Sci

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Poly(lactic acid)/poly(ɛ‐caprolactone)/carbon nanotube (PLA/PCL/CNT) nanocomposites (NCs) were melt‐processed in a conventional industrial‐like twin‐screw extruder maintaining a constant PLA/PCL 80/20 wt. ratio. CNTs located in the thermodynamically favored PCL phase and, as a result, the “sea–island” morphology of the unfilled blend was replaced by a more continuous PCL dispersed phase in the ternary NCs. Rheological and electrical percolation took place at the same CNT contents (over 1.2 wt %) that TEM images suggest continuity of the PCL phase. The electrical and the low‐strain mechanical behaviors upon CNT addition were similar in the reference binary PLA/CNT and ternary PLA/PCL/CNT NCs. In the percolated NCs, the conductivity became 106–107 times higher than in the insulating compositions, while the Young modulus increased linearly upon the addition of CNT (12% increase at 4.9 wt % loading). Moreover, all the PLA/PCL/CNT NCs showed a ductile behavior (elongation at break >130%) similar to that of the unfilled PLA/PCL blend (140%), in contrast to the brittle behavior of binary PLA/CNT NCs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45265.

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“…Up to now, the studies based on thermoplastic/CNT NCs aimed to identify either the best performing CNT modification for a particular matrix [3][4][5][6], or the influence of the processing conditions [7,8] on dispersion and properties. However, recently, more complex systems where a third component is present [9][10][11][12] have warranted attention.…”

Section: Introductionmentioning

confidence: 99%

“…Rubber modified NCs based on PC [23][24][25][26][27], polyamide 6 [12,28], poly(l-lactide) [29][30][31] have been extensively studied in the literature. Non elastomeric polymers have been also used to modify PC based NCs [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

González¹,

Santamaría

Eguiazábal

2015

Composites Part A: Applied Science and Manufacturing

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Attaining high electrical conductivity and toughness in PA6 by combined addition of MWCNT and rubber

Cited by 29 publications

References 40 publications

The Effect of the Preparation Method and the Dispersion and Aspect Ratio of CNTs on the Mechanical and Electrical Properties of Bio-Based Polyamide-4,10/CNT Nanocomposites

The Effect of the Preparation Method and the Dispersion and Aspect Ratio of CNTs on the Mechanical and Electrical Properties of Bio-Based Polyamide-4,10/CNT Nanocomposites

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

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