Effect of interfacial properties of filled carbon black nanoparticles on the conductivity of nanocomposite

Jian, Shao; Li, Xue; Ji, Mingbo

doi:10.1002/app.51604

Cited by 3 publications

(2 citation statements)

References 52 publications

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“…12 One of the routes used to modify some properties in rubber compounds is the incorporation of nanofillers (organic or inorganic materials). In this sense, several types of carbon materials have been used to reduce the electrical resistivity of rubber, such as conductive carbon black, 13,14 carbon nanotubes (CNT), 15,16 and graphene. 17,18 Among these, carbon nanotubes are promising due to the higher aspect ratio compared with carbon black and the lower cost in front of graphene, which has not yet achieved the necessary productivity for commercial viability.…”

Section: Introductionmentioning

confidence: 99%

Improving the swelling, mechanical, and electrical properties in natural rubber latex/carbon nanotubes nanocomposites: Effect of the sonication method

Barbosa

Gonçalves

Tozzi

et al. 2022

J of Applied Polymer Sci

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Conductive polymeric composites are exciting for future electronic applications given the possibility to ally electrical conductivity and flexibility. However, the high viscosity of plasticized elastomers difficult the dispersion of conductive fillers in an elastomeric matrix is difficult. This research aimed to compare the use of bath or probe sonication to disperse multi-walled carbon nanotubes (MWCNT) in the lower-viscosity natural rubber latex. The MWCNT concentration varied from 0.5 to 2.5 wt%, and the coagulated compounds were vulcanized after compounding in a two-roll mill. Nanocomposite's swelling behavior was determined by Flory-Rehner crosslink density and Kraus theory, indicating better dispersion in probe sonication, which also was conducted in lesser time and applied lower energy than bath sonication. This result is evidenced through tensile strength and hardness tests, as the better MWCNT dispersion improved the reinforcement due to greater filler-matrix interaction. The electrical response was obtained by impedance spectroscopy, with higher conductivities also found in tip-sonicated samples.In addition, cyclic strain fatigue test was realized from 20% to 100% strain during 20,000 cycles with simultaneous impedance measurement, reinforcing the better distribution of MWCNT in the probe-sonicated nanocomposites with higher tensile stress (Payne's effect) and conductivity retention than bath sonicated.

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Section: Introductionmentioning

confidence: 99%

Improving the swelling, mechanical, and electrical properties in natural rubber latex/carbon nanotubes nanocomposites: Effect of the sonication method

Barbosa

Gonçalves

Tozzi

et al. 2022

J of Applied Polymer Sci

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show abstract

“…However, it is hard to achieve the performance of low-cost, easy-process, high sensitivity, good reproducibility, and rapid response simultaneously. Adding conductive nanoparticles is an ideal way to improve conductivity by forming conductive networks to transfer electrons [29]. As one of them, carbon black (CB) nanoparticles have been widely used as an electric conductive agent in various nanocomposites [30].…”

Section: Introductionmentioning

confidence: 99%

Carbon black nanoparticles modified gelatin composite-based thin film for rapid-response humidity sensing

Yu¹,

Wang²,

Cao³

et al. 2022

Meas. Sci. Technol.

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Humidity monitoring is essential for food processing, pharmaceutical, and precision electronics industries. Conventional humidity sensors based on metal oxides and ceramics show an ideal response to variation humidity. However, long response time and complex manufacturing processes pose a challenge for their more comprehensive application and further development. Resistive polymers show promise in antistatic materials and sensor applications. In this study, gelatin composite, a popular water-soluble polymer, is mixed with carbon black nanoparticles for better humidity sensitivity. Using the state-of-the-art thin film deposition method, the designed interdigitated electrode is covered by a nano-scale thin film of the prepared composite film. The relative humidity range between 20.3% and 83.2% can be well detected according to the evaluation of a customized chemical vapors measurement system. Furthermore, an extreme linear relation and high sensitivity of 0.35mV/%RH are achieved for the range from the relative humidity of 20% to 65.2%. Highly repeatable performance can be demonstrated by repeated experiments with several humidities. Rapid response and recovery features are found during the characterization, while the response and recovery time are lower than 10 s.

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Interphase-assisted suppression of electrode polarization in nanoparticulate-elastomeric composites

Meddeb

Ounaies

2023

Journal of Applied Physics

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The electrical properties of polymer nanocomposites are governed by the behavior of the internal charges. In particular, the interphase around the nanoparticles strongly influences the distribution and mobility of charge carriers within the nanocomposites, which, in turn, impacts the performance of these materials. In this work, we probe the internal charge behavior in the presence of nanoparticles with a focus on the low-frequency regime using a suite of techniques. By investigating the depolarizing currents and the dependence of the dielectric properties on the frequency and temperature, we demonstrate that the interphases redistribute the space charges, increase their trap depth, and suppress the electrode polarization in an elastomeric nanocomposite. Additionally, we study the effect of the nanoparticle content on the dielectric behavior by comparing the internal charge behavior of 1, 2, and 4 vol. % nanocomposites. At only 4 vol. % loading, the mobility of charge carriers is effectively limited, leading to lower dc conductivity compared to the unfilled elastomer, and 1 and 2 vol. % nanocomposites. These findings are based on the model materials used in this study, TiO2 nanoparticles and polydimethylsiloxane, and can be extended to other nanoparticulate-filled elastomer composites to design lightweight dielectrics, actuators, and sensors with improved capabilities. Judicious manipulation of interfacial phenomena in polymer nanocomposites—especially those with a dilute content of nanoparticles—provides a promising path forward for the design of materials with exceptional electrical and other physical properties.

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Effect of interfacial properties of filled carbon black nanoparticles on the conductivity of nanocomposite

Cited by 3 publications

References 52 publications

Improving the swelling, mechanical, and electrical properties in natural rubber latex/carbon nanotubes nanocomposites: Effect of the sonication method

Improving the swelling, mechanical, and electrical properties in natural rubber latex/carbon nanotubes nanocomposites: Effect of the sonication method

Carbon black nanoparticles modified gelatin composite-based thin film for rapid-response humidity sensing

Interphase-assisted suppression of electrode polarization in nanoparticulate-elastomeric composites

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