High performance dielectric elastomers by partially reduced graphene oxide and disruption of hydrogen bonding of polyurethanes

Liu, Suting; Tian, Ming; Yan, Bingyue; Yao, Yang; Zhang, Liqun; Nishi, Toshio

doi:10.1016/j.polymer.2014.11.012

Cited by 122 publications

(80 citation statements)

References 40 publications

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“…Their results showed that the GO was dispersed uniformly in the matrix even at higher loadings due to the strong interfacial interactions with the matrix and the spin-flash drying technique which was employed during their solution blending procedure. The alignment of the filler which can be observed, was ascribed to the hydrogen bonds between the oxygen groups from GO and the N-H groups from TPU [158].…”

Section: Electron Microscopymentioning

confidence: 90%

“…Liu et al [158] produced composites consisting of graphene oxide (GO) nanosheets and a thermoplastic polyurethane (TPU) and used both TEM and SEM for the observation of the microstructural characteristics of their materials ( Figure 12). Their results showed that the GO was dispersed uniformly in the matrix even at higher loadings due to the strong interfacial interactions with the matrix and the spin-flash drying technique which was employed during their solution blending procedure.…”

Section: Electron Microscopymentioning

confidence: 99%

See 1 more Smart Citation

Graphene/elastomer nanocomposites

Papageorgiou

Kinloch

Young

2015

Carbon

339

201

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In the decade since the first isolation and identification of graphene, the scientific community is still finding ways to utilize its unique properties. The present review deals with the preparation and physicochemical characterization of graphene-based elastomeric nanocomposites. The processing and characterization of graphene and graphene oxide are described in detail, since the presence of such fillers in an elastomeric matrix affects dramatically the properties of the nanocomposite samples. Several preparation routes for the efficient dispersion of graphene in elastomers are then discussed, while aspects such as the interfacial bonding between the filler and the matrix or interactions between the fillers have been thoroughly analysed. Different types of graphene/elastomer nanocomposites are described in terms of their manufacture and properties and it has been shown that depending on the type of graphene employed and the preparation methods, the mechanical, thermal, electrical and barrier properties of the elastomeric matrix can be enhanced due to the presence of graphene, even at relatively-low filler loadings. In most cases, the formation of a filler network can play a major role in the improvement of the overall performance of the material.

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Section: Electron Microscopymentioning

confidence: 90%

Section: Electron Microscopymentioning

confidence: 99%

Graphene/elastomer nanocomposites

Papageorgiou

Kinloch

Young

2015

Carbon

339

201

View full text Add to dashboard Cite

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“…By virtue of the excellent properties such as large strain, fast response, lightweight, reliability, high energy density, and high electromechanical coupling efficiency, DEAs find applications in artificial muscles, sensors, micro air vehicles, flat-panel speakers, micro-robotics, and responsive prosthetics [4][5][6][7][8]. A key limitation for the practical application of DEAs is the requirement of high electric field (>100 kV/mm) to drive them [9][10][11], which could be harmful to humans and can damage equipment, particularly in biological and medical fields [12]. Therefore, getting a large actuated strain at a low electric field is the biggest challenge for DEAs.…”

Section: Introductionmentioning

confidence: 99%

Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Ning

Wang

Zhang

et al. 2015

International Journal of Smart and Nano Materials

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Herein, graphene oxide (GO)-encapsulated silica (SiO 2 ) hybrids (GO@SiO 2 ) were prepared via electrostatic self-assembly of the 3-aminopropyltriethoxysilane (APS)-modified SiO 2 and GO. The as-prepared GO@SiO 2 was introduced into polydimethylsiloxane (PDMS) elastomer to simultaneously increase the dielectric constant (k) and mechanical properties of PDMS. Then, the in situ thermal reduction of GO@SiO 2 / PDMS composites was conducted at 180°C for 2 h to increase the interfacial polarizability of GO@SiO 2 . As a result, the values of k at 1000 Hz are largely improved from 3.2 for PDMS to 13.3 for the reduced GO@SiO 2 (RGO@SiO 2 )/PDMS elastomer. Meanwhile, the dielectric loss of the composites remains low (<0.2 at 1000 Hz). More importantly, the actuated strain at low electric field (5 kV/mm) obviously increases from 0.3% for pure PDMS to 2.59% for the composites with 60 phr of RGO@SiO 2 , an eightfold increase in the actuated strain. In addition, both the tensile strength and elastic modulus are obviously improved by adding 60 phr of RGO@SiO 2 , indicating a good reinforcing effect of RGO@SiO 2 on PDMS. Our goal is to develop a simple and effective way to improve the actuated performance and mechanical strength of the PDMS dielectric elastomer for its wider application.

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“…Liu et al [95] dispersed GO in the matrix of thermoplastic polyurethanes (TPU) by solution blending. The graphene distributed uniformly and in an orderly manner in the TPU matrix because of the hydrogen bond.…”

Section: Using Hydrogen Bondsmentioning

confidence: 99%

“…The results showed that the tensile strength and tear strength of XNBR are increased by 357% and 117%, respectively, with the addition of 1.9 vol.% GO due to the high degree of dispersion of graphene in the matrix and a strong interfacial adhesion between the GO and the matrix. Liu et al [95] dispersed GO in the matrix of thermoplastic polyurethanes (TPU) by solution blending. The graphene distributed uniformly and in an orderly manner in the TPU matrix because of the hydrogen bond.…”

Section: Using Hydrogen Bondsmentioning

confidence: 99%

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

et al. 2018

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Graphene, as a reinforcement for composite materials, has become a focus recently. However, the dispersion of graphene in composite materials is a problem that has been difficult to solve for a long time, which makes it difficult to produce and use graphene-reinforced composites on a large scale. Herein, methods to improve the dispersion of graphene and dispersion mechanisms that have been developed in recent years are reviewed, and the advantages and disadvantages of various methods are compared and analyzed. On this basis, the dispersion methods and mechanisms of graphene are prospected, which lays the foundation for graphene application and preparation.

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High performance dielectric elastomers by partially reduced graphene oxide and disruption of hydrogen bonding of polyurethanes

Cited by 122 publications

References 40 publications

Graphene/elastomer nanocomposites

Graphene/elastomer nanocomposites

Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

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