Adjustable core-sheath architecture of polyaniline-decorated hollow carbon nanofiber nanocomposites with negative permittivity for superb electromagnetic interference shielding

Xu, Xiaojiang; Yao, Feichong; Ali, Ola A. Abu; Xie, Wenhao; Mahmoud, Samy F.; Xie, Peitao; El‐Bahy, Salah M.; Huang, Mina; Liu, Chuntai; Fan, Runhua; Guo, Zhanhu; Du, Ai; Estévez, Diana; Qin, Faxiang; Peng, Hua-Xin; Young, David P.; Gu, Hongbo

doi:10.1007/s42114-022-00538-8

Cited by 64 publications

(22 citation statements)

References 61 publications

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“…Conductive biomaterials, such as polypyrrole (PPy), polythiophene, polyaniline, polyphenylene, and polyacetylene, could transfer cell signals and respond intelligently to electrical domains under physiological conditions by supplying π-bonding [19,20]. So far, many applications of this type of conductive polymer have been demonstrated and approved, including piezoresistive composites [21] [22], energy storage supercapacitors [23][24], electromagnetic shielding [25], and water treatment [26] [27]. In the field of electroactive scaffolds for tissue regeneration, PPy plays a critical role among conductive polymers.…”

Section: Introductionmentioning

confidence: 99%

Reinforced conductive polyester based on itaconic acids, glycerol and polypyrrole with potential for electroconductive tissue restoration

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Reinforced conductive polyester based on itaconic acids, glycerol and polypyrrole with potential for electroconductive tissue restoration

et al. 2023

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“…14 In fact, the thermal conductivity of composites strongly depends on several key parameters, such as the intrinsic thermal conductivity of the matrix and h-BN filler, 15−17 the geometric size and orientation of the h-BN filler, 18−20 and the interface. 21,22 However, a systematic and quantitative understanding of the relationship between these factors and thermal conductive properties is still lacking.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we propose to modify the surface of h-BN fillers with polydopamine (PDA) to improve the interfacial compatibility, and the in-plane thermal conductivity of composite films increases almost 161% from 16.6 to 26.8 W·m –1 ·K –1 . In fact, the thermal conductivity of composites strongly depends on several key parameters, such as the intrinsic thermal conductivity of the matrix and h-BN filler, − the geometric size and orientation of the h-BN filler, − and the interface. , However, a systematic and quantitative understanding of the relationship between these factors and thermal conductive properties is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on the Optimization of the Anisotropic Thermal Conductivity of Hexagonal Boron Nitride/Nanofiber Composite Films

Liu

Jia

et al. 2023

Ind. Eng. Chem. Res.

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Understanding the relationship between the physical properties of composite components and thermal conductivity is conducive to optimize the overall heat-dissipation performance. Herein, we conduct a numerical simulation to investigate the anisotropic thermal conductivity and heat flux distributions of hexagonal boron nitride (h-BN)/nanofiber composite films. The critical issues to be considered include the effect of the intrinsic thermal conductivity of the nanofiber matrix and h-BN filler, the geometric size and orientation of the h-BN filler, and the interface thermal resistance. The results demonstrate that increasing the intrinsic thermal conductivity of nanofiber matrix is beneficial to bridge the straightforward h-BN pathway along the directional heat transfer, and the thermal barrier can be effectively inhibited by tuning the interface thermal resistance below 10 −8 m 2 •K•W −1 . As for the h-BN fillers, increasing their intrinsic thermal conductivity and length have very limited contributions to the improvement of anisotropic thermal conductivity. But raising the aspect ratio of h-BN and regulating the orientation of the well-stacked layered h-BN filler toward the heat source transfer direction are conducive to enhance the directional thermal conductivity. Based on these comprehensive mathematical analyses of all of the influencing factors, we propose an optimized equation for effectively predicting the anisotropic thermal conductivity of h-BN/nanofiber composite films. The findings are expected to guide the design of highly anisotropic thermal conductive materials.

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“…Conductive polymers are attractive materials due to their various functions, from insulators to conductors, while retaining traditional polymers’ mechanical properties and processing qualities. − Polyaniline (PANI) is one of the most promising conductive polymers due to its unique physical and electrochemical properties. − Current research has revealed its functionalities by fabricating diverse morphologies, composites, colloids, and hydrogels. − Different PANI nanostructures have been used in numerous fields, extending from adsorbents, − chemical sensors, − biosensors, , electrocatalysis, , and supercapacitors to electrode materials for batteries. − …”

Section: Introductionmentioning

confidence: 99%

Highly Conductive and Dispersible Polyaniline Microtubes Controlled by Methyl Orange

Cao

Cai

et al. 2022

ACS Appl. Polym. Mater.

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Polyaniline (PANI) is one of the best-known conductive polymers that has been widely studied due to its ease of synthesis, low cost, and tunable conductivity. However, it is still challenging to synthesize dispersible and highly electroconductive PANIs with high aspect ratios. This research provides a facile onestep synthetic method assisted by an organic dye, methyl orange (MO), to obtain high aspect ratios (the ratio could reach 20) in PANI structures. The presence of MO contributes to microtubes' morphology, enhancing their electrical conductivity from 0.5 to 4.6 S cm −1 , which is 8 times that of spherical PANI nanoparticles. The electrical properties and processability of the PANI microtubes were well explored simultaneously. The PANI microtubes can reach high conductive levels and maintain stable electrical performance for over 30 days. In addition, the PANI microtubes could be dispersed in a wide range of organic solvents and water. These functionalities enable them to act as conductive fillers to be effectively combined with silver flakes in thermoplastic polyurethane resins for fabricating conductive composites. Adding the PANI microtubes combined with silver flakes as conductive fillers in polyurethane, the resistivity of the composites can decrease to 1/1900 of those filled only with the same mass ratio of silver flakes, showing their great potential in reinforcing resins.

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Adjustable core-sheath architecture of polyaniline-decorated hollow carbon nanofiber nanocomposites with negative permittivity for superb electromagnetic interference shielding

Cited by 64 publications

References 61 publications

Reinforced conductive polyester based on itaconic acids, glycerol and polypyrrole with potential for electroconductive tissue restoration

Reinforced conductive polyester based on itaconic acids, glycerol and polypyrrole with potential for electroconductive tissue restoration

Numerical Simulation on the Optimization of the Anisotropic Thermal Conductivity of Hexagonal Boron Nitride/Nanofiber Composite Films

Highly Conductive and Dispersible Polyaniline Microtubes Controlled by Methyl Orange

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