Enhanced electrical and mechanical properties of graphene nano-ribbon/thermoplastic polyurethane composites

Jun, Yun‐Seok; Habibpour, Saeed; Hamidinejad, Mahdi; Park, Moon Gyu; Ahn, Wook; Yu, Aiping; Park, Chul

doi:10.1016/j.carbon.2020.12.023

Cited by 49 publications

(39 citation statements)

References 74 publications

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“…14 Hence, S z can be improved at the same electrical field by enhancing electromechanical sensitivity (β, β = ε r /Y) through increasing ε r and decreasing Y of elastomer. To increase ε r , many fillers, including carbon nanotubes, 15,16 carbon nanospheres, 12 graphene nanosheets, 17,18 and organic strong polar azobenzene 19 have been chemically/physically incorporated into TPU to form the dielectric elastomer composites. However, only limited actuation strain was observed in such TPU composites due to their further increased Y.…”

Section: Introductionmentioning

confidence: 99%

Advanced dielectric elastomer based on optimized thermoplastic polyurethane–styrene ethylene butylene styrene blend: Experiment and simulation

Zhu

Zhang

Zhao

et al. 2021

J of Applied Polymer Sci

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Increasing the actuation characteristics of dielectric elastomer actuators (DEAs) under low electric field strength without compromising the elasticity and breakdown strength is still one of the great challenges in application field.Herein, we propose a simple, efficient, and controllable strategy to prepare dielectric elastomers with intrinsically good integrated properties by introducing styrene ethylene butylene styrene (SEBS) in thermoplastic polyurethane (TPU). Combined with experiments and molecular dynamics simulation, we find that the SEBS is uniformly dispersed in TPU matrix and a good interface structure is formed by pi-pi interaction and entanglement. The above characteristics lead to the destruction of the hydrogen bond network of TPU and the formation of single aggregation structure. Consequently, much decreased Young's modulus (Y) and enhanced breakdown field (E br ) are achieved. Especially, when the content of SEBS is 4.76 wt%, the blend shows a desirable Y of 2.4 MPa and a much improved E br (118 kV mm À1 ), which is about 59% lower and 42% higher than those of TPU, respectively. As a result, the maximum electrical strain area of the dielectric blend elastomer reaches 4.7%, which is 250% higher than that of pure TPU under the same electric field strength.

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Section: Introductionmentioning

confidence: 99%

Advanced dielectric elastomer based on optimized thermoplastic polyurethane–styrene ethylene butylene styrene blend: Experiment and simulation

Zhu

Zhang

Zhao

et al. 2021

J of Applied Polymer Sci

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“…Jun et. al [16] incorporated GNRs in polyurethane (PU) matrix with solvent casting method. With 8.2 vol.% addition of GNRs in PU matrix results in an increase in tensile modulus to 37.2 MPa from 3.6 MPa for pure PU.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Jun et. al [16] incorporated GNRs in PU matrix using solvent casting method. It shows with the incorporation of 8.2 vol.% of GNRs in PU matrix show the frequency-independent AC conductivity.…”

Section: Electrical Propertiesmentioning

confidence: 99%

“…Jun et. al [16] reinforced the GNRs in PU matrix by solvent casting method and measured EMI shielding effectiveness in comparison to PU/MWNTs nanocomposites.…”

Section: Emi Shieldingmentioning

confidence: 99%

“…However, the addition of GNRs filled polymer nanocomposites were reported in the literature and the research is in the initial stage. Some of the papers suggest the superior reinforcing efficiency of GNRs in polymer nanocomposites as compared to MWNTs [16][17]. Thus, the superior reinforcing efficiency of GNRs in polymer nanocomposites needs to be reviewed.…”

Section: Introductionmentioning

confidence: 99%

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Graphene Nanoribbons Reinforced Polymer Nanocomposites and its Applications: A Review

Prasad

Sharma

Tambe

2022

J. Phys.: Conf. Ser.

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Graphene nanoribbons (GNRs) synthesis methods are discussed along with its characterization. GNRs are modified with a functional group to tailor the properties of GNRs. The reinforcement of GNRs in polymer matrix nanocomposites has influenced the mechanical, electrical, rheological, and thermal properties. The GNRs are superior to multiwalled carbon nanotubes (MWNTs) as a filler material in polymer nanocomposites established through experimental observations. Further, the modification of GNRs covalently and non-covalently improves the dispersion of GNRs in the polymer matrix and improves the properties of nanocomposites significantly. The GNRs filled polymer nanocomposites show the applications like corrosion protection of metal, Joule heating to evaporate moisture, EMI shielding for protecting devices, a sensor for gas sensing, and oil separation by processing hydrophobic polymer nanocomposites foam.

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Role of carbonaceous fillers in electromagnetic interference shielding behavior of polymeric composites: A review

Devi

Priya

Bapu³

et al. 2022

Polymer Composites

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In this review, the EMI shielding properties of the various carbonaceous fillers are thoroughly reviewed. Electromagnetic interference (EMI) had been a cause of major concern in the live broadcasting, entertainment, aviation and defense industries since vital radio signals could create more interference, which could lead to poor performance. To reduce the effect of EMI, the organic polymeric composites along with the carbonaceous fillers are mostly used since they are flexible, low denser, high mechanical strength, high thermo-stability, high electrical and thermal conductivity, excellent fracture toughness, and high friction/wear resistance. There are lot of carbon based materials are being used as EMI shielding material in mono and compound form. This review gives a broad understanding of the utilization of carbonaceous fillers in polymer matrixes. Thus, the overall coverage on this carbon based materials and their effectiveness could help the researchers to find right carbon material for suitable application. According to this review, the absorption mechanism is vital to achieve high EMI shielding effect. The fillers such as graphene and CNTs are most preferable EMI shielding filler, according to the vast coverage of previous articles. However, there are more magnetoelectric materials also evolved recently, having combined properties of both conductive and magnetic, yielding high SE at elevated frequencies.

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Enhanced electrical and mechanical properties of graphene nano-ribbon/thermoplastic polyurethane composites

Cited by 49 publications

References 74 publications

Advanced dielectric elastomer based on optimized thermoplastic polyurethane–styrene ethylene butylene styrene blend: Experiment and simulation

Advanced dielectric elastomer based on optimized thermoplastic polyurethane–styrene ethylene butylene styrene blend: Experiment and simulation

Graphene Nanoribbons Reinforced Polymer Nanocomposites and its Applications: A Review

Role of carbonaceous fillers in electromagnetic interference shielding behavior of polymeric composites: A review

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