Increased response/recovery lifetimes and reinforcement of polyaniline nanofiber films using carbon nanotubes

Blighe, Fiona M.; Diamond, Dermot; Coleman, Jonathan N.; Lahiff, Emer

doi:10.1016/j.carbon.2011.10.022

Cited by 27 publications

(17 citation statements)

References 60 publications

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“…Such nanocomposites have shown excellent sensor performance under ambient conditions and therefore can be used for fabrication of low-cost room temperature sensors. However, many reports on gas sensing studies by polymer composites have been reported sensor failure/breakdown due to polymer Page 5 of 38 A c c e p t e d M a n u s c r i p t 5 degradation or faced serious demerits like low sensitivity and incomplete recovery [30]. Recent study on MWCNT/polymer based ammonia gas sensors demonstrated high sensitivity but has failed to achieve complete desorption of adsorbed ammonia gas molecules from the surface of MWCNTs [31].…”

Section: Page 4 Of 38mentioning

confidence: 97%

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

Abdulla

Mathew

Pullithadathil

2015

Sensors and Actuators B: Chemical

331

165

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Section: Page 4 Of 38mentioning

confidence: 97%

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

Abdulla

Mathew

Pullithadathil

2015

Sensors and Actuators B: Chemical

331

165

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“…Several studies about CNT [20][21][22][23][24][25][26][27] and graphene oxide [28][29][30], for electrical and mechanical reinforcement for PAni exist, but there have been few reports on their effect in PAni-actuators [31][32][33]. Carbon nanofillers in PAni actuators can eliminate the need of conductive metallic thin layers on actuator surfaces to increment their electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

The effect of carbon nanofillers on the performance of electromechanical polyaniline-based composite actuators

et al. 2015

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Different types of crystalline carbon nanomaterials were used to reinforce polyaniline (PAni) for use in electromechanical bilayer bending actuators. The objective is to analyze how the structural properties of the nanocarbons affect the in-situ produced PAni structure and subsequent final composite actuator behavior. Nanocarbons investigated were multiwalled carbon nanotubes, nitrogen-doped carbon nanotubes, helical-ribbon carbon nanofibers and graphene oxide, each one presenting different shape and structural characteristics. Films of nanocarbon-PAni composite were tested in a liquid electrolyte cell system. Experimental design was used to select type of nanocarbon filler and composite loadings that showed a good balance of electromechanical properties. Raman spectroscopy suggests good interaction between PAni and the nanocarbon fillers.Electron microscopy showed best nanofiller dispersion for graphene oxide, followed by multiwall carbon nanotubes. On the contrary, nitrogen doped nanotube composites showed dispersion problems, and thus a poor performance. Multiwall carbon nanotubes composite actuators had the best performance based on the combination of bending angle, bending velocity and maximum working cycles (measured considering nanofiller loading and applied voltage), while graphene oxide attained similar good performance.

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“…[16][17][18] So, CNTs are often employed as fillers for high performance PANI composite films. 15,[19][20][21][22][23][24][25][26][27][28][29][30] The conductivity of the PANI/ CNT composite films reported previously is usually in the range of about 1.9 to 50 S/cm. [19][20][21][22][23][24][25][26][27][28][29][30] Generally, the composite EC increases with increasing the CNT content.…”

mentioning

confidence: 99%

“…15,[19][20][21][22][23][24][25][26][27][28][29][30] The conductivity of the PANI/ CNT composite films reported previously is usually in the range of about 1.9 to 50 S/cm. [19][20][21][22][23][24][25][26][27][28][29][30] Generally, the composite EC increases with increasing the CNT content. Nevertheless, the high EC comes into conflict with the high flexibility and high strength since a relatively high CNT content will result in poor film formability, and greatly lowered flexibility and strength due to the CNT-constrained matrix deformation and CNT aggregation.…”

mentioning

confidence: 99%

“…The conductivity of the composite film is circa 231 S/cm in its stretching direction, which is the highest value so far for the CNT/ PANI composite films even with a much higher CNT content. 15,[19][20][21][22][23][24][25][26][27][28][29][30] Meanwhile, the PANI composite film with a low content of 2 wt % CNTs shows a moderately improved strength and maintains the good flexibility of the pure PANI film to a high degree.…”

mentioning

confidence: 99%

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Facile preparation of highly conductive, flexible, and strong carbon nanotube/polyaniline composite films

Xiao

Zhang

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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In general, the high electrical conductivity (EC) comes into conflict with the good flexibility and high strength of carbon nanotube (CNT)/polyaniline (PANI) composites. In other words, a high CNT content will bring about a high EC but lead to a low flexibility and strength due to the CNTconstrained matrix deformation and CNT aggregation. In this work, a highly conductive, flexible and strong CNT/PANI composite film prepared via a facile solvent-evaporation method is readily obtained by a cold stretching. The cold stretching is conducted at room temperature for the CNT/PANI film. It is observed that the cold stretching process leads to an unexpectedly enhanced EC. The as-obtained EC of 231 S/cm is much higher than that (2-50 S/cm) of the previously reported CNT/ PANI composite films. Meanwhile, the strength is obviously improved over that of the pure PANI film and the good flexibility is maintained to a high degree by the introduction of a proper CNT content. V C 2015 Wiley Periodicals, Inc. J. Polym.

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Increased response/recovery lifetimes and reinforcement of polyaniline nanofiber films using carbon nanotubes

Cited by 27 publications

References 60 publications

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

The effect of carbon nanofillers on the performance of electromechanical polyaniline-based composite actuators

Facile preparation of highly conductive, flexible, and strong carbon nanotube/polyaniline composite films

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