Electrical double percolation and carbon nanotubes distribution in solution processed immiscible polymer blend

Al‐Saleh, Mohammed H.; Al-Anid, Haya K.; Hussain, Yazan A.

doi:10.1016/j.synthmet.2013.05.004

Cited by 33 publications

(29 citation statements)

References 45 publications

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“…The resulting blend-nanocomposite properties depend on the miscibility of the polymers and the localization of the MWCNTs. Many studies are focused on the preparation of nanocomposite blends with a co-continuous morphology and selective localization of nanotubes in one component or at the interface [26,27,28,29,30,31], since the phenomenon of double percolation can be used in such systems [26,27,28,29,30,32].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Blend Ratio in PA6/PA66/MWCNT Blend Composites on the Electrical and Thermal Properties

2019

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It is known that the percolation threshold of polyamide 6 (PA6)/multiwalled carbon nanotube (MWCNT) composites is higher than that of PA66/MWCNT composites under the same mixing conditions and melt viscosity. A series of blends of PA6 and PA66 containing 1 wt % MWCNTs have been prepared to investigate this phenomenon. At contents up to 20 wt % PA66, the blends were not electrically conductive. The electrical resistivity dropped to 109 Ohm∙cm for PA66/PA6 30/70 blends. The resistivity was 105 Ohm∙cm at higher PA66 contents. Differential scanning calorimetry was used to investigate the thermal behavior of blends. The glass transition temperature was almost constant for all blend compositions, indicating that the amorphous phases are miscible. The MWCNT addition influenced the crystallization of PA66 much more than the PA6 crystallization. A heterogeneous crystallization of the polyamide in PA66/PA6 blends took place, and the MWCNTs were mainly localized in the earlier crystallizing PA66 phase. Thus, the formation of the nanotube network and thus the electrical volume resistivity of the PA6/PA66 blends with 1 wt % MWCNTs is significantly influenced by the crystallization behavior. In PA66/PA6 blends up to 60 wt %, the more expensive PA66 can be replaced by the cheaper PA6 while retaining its electrical properties.

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Section: Introductionmentioning

confidence: 99%

The Influence of the Blend Ratio in PA6/PA66/MWCNT Blend Composites on the Electrical and Thermal Properties

2019

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“…The modeling techniques help to realize the behavior of materials [11][12][13][14][15]. Also, the progress of simulation methods is much vital to find the structure-processing-properties correlation for design and development of advanced materials [16][17][18][19]. In the previous study, we expressed the studies for simulation of modulus in polymer/CNT nanocomposites [20].…”

Section: Introductionmentioning

confidence: 99%

Modeling of tensile modulus in polymer/carbon nanotubes (CNT) nanocomposites

Zare

2015

Synthetic Metals

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“…Several methods have been utilized to develop NC materials, namely solution processing, 9,10 melt mixing, 11,12 in situ polymerization, 13,14 wet mixing, 15,16 and dry mixing. 5,17 Each of the aforementioned compounding processes has several advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Electrical and dielectric behaviors of dry-mixed CNT/UHMWPE nanocomposites

Al‐Saleh

Jawad

Ghanem

2013

High Performance Polymers

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Carbon nanotube (CNT)/ultrahigh-molecular weight polyethylene (UHMWPE) nanocomposite with an electrical percolation threshold of only 0.1 wt% was prepared by simple dry mixing followed by compression molding. The nanocomposite microstructure, direct current and alternating current (AC) electrical conductivities, conduction mechanisms, and dielectric properties in the 10 1 -10 5 Hz frequency range have been investigated. Due to the localization of the nanofiller at the surface of UHMWPE powder particles, a segregated microstructure within the polymer matrix was created. Nanocomposites filled with 0.125-0.5 wt% CNT were found to follow the typical universal dynamic response behavior, and the characteristic frequency was found to increase with the increase in CNT concentration. At CNT concentration ! 0.5 wt%, the AC conductivity was found to be frequency independent over the entire frequency range studied.

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Electrical double percolation and carbon nanotubes distribution in solution processed immiscible polymer blend

Cited by 33 publications

References 45 publications

The Influence of the Blend Ratio in PA6/PA66/MWCNT Blend Composites on the Electrical and Thermal Properties

The Influence of the Blend Ratio in PA6/PA66/MWCNT Blend Composites on the Electrical and Thermal Properties

Modeling of tensile modulus in polymer/carbon nanotubes (CNT) nanocomposites

Electrical and dielectric behaviors of dry-mixed CNT/UHMWPE nanocomposites

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