Enhanced dielectric and mechanical properties in chlorine-doped continuous CNT sheet reinforced sandwich polyvinylidene fluoride film

Zhang, Zhenchong; Gu, Yi; Wang, Shaokai; Li, Qingwen; Li, Min; Zhang, Zuoguang

doi:10.1016/j.carbon.2016.05.068

Cited by 66 publications

(33 citation statements)

References 51 publications

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“…However, the tensile strength and modulus of G/SF films began to reduce when graphene content was increased to 4% and 8%. As confirmed by many researchers, a critical point for mechanical properties existed when graphene content reached a certain amount . When graphene content was higher than this point, excessive graphene–SF hetero interfaces might undermine integrity of composite films and eventually led to undermined mechanical performance of G/SF films.…”

Section: Resultsmentioning

confidence: 90%

“…The results showed that G/SF films exhibited higher currents with higher graphene contents. The electrical conductivity was determined by the content and distribution of graphene in composite films . The increased graphene led to the decreased distance among adjacent graphene, which in turn promoted overall electrical conductivity of the films.…”

Section: Resultsmentioning

confidence: 99%

“…Addition of electrical conductive polypyrrole, polyaniline and carbon nanotube in polymer materials have been proven to be an effective method that can substantially increase electrical conductivity of scaffolds . Graphene, a two‐dimensional mono‐layer of carbon atoms, has attracted much attention due to its outstanding electrical conductivity . It has been considered as a promising candidate for cell imaging, drug delivery, stem cell engineering and cancer therapy .…”

Section: Introductionmentioning

confidence: 99%

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Enhancing neural differentiation of induced pluripotent stem cells by conductive graphene/silk fibroin films

Niu

Chen

Yao

et al. 2018

J Biomedical Materials Res

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Nerve regeneration and function recovery remain challenges for tissue engineering. The application of suitable scaffold in tissue engineering has been demonstrated to be able to enhance nerve regeneration and differentiation. However, a desired scaffold must meet the requirements of good cytocompatibility and high electrical conductivity simultaneously. In this study, a conductive film composed of SF and graphene was successfully fabricated, which was applied to evaluate its effect on the neural differentiation of iPSCs. The conductive film was found to enhance the differentiation of iPSCs toward neurons. In addition, the differentiation was enhanced with graphene contents and highest value was obtained at graphene content of 4%. Thus, the results in this study suggested that 4% G/SF film might be a suitable biomaterial scaffold for application in neural regeneration. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2973-2983, 2018.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhancing neural differentiation of induced pluripotent stem cells by conductive graphene/silk fibroin films

Niu

Chen

Yao

et al. 2018

J Biomedical Materials Res

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“…Although high dielectric performance has been achieved through blending polymer dielectrics and inorganic dielectrics, simultaneously obtaining high dielectric and mechanical properties based on the blend strategy is still a tough nut to crack. Nowadays, favorable mechanical characteristics of high-k composites are preferred [ 44 , 45 , 46 ]. In our previous work [ 47 ], both the dielectric and the mechanical properties of alpha-SiC/fluoropolymer composites were balanced by the surface modification of SiC and chemical cross-linking of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric and Mechanical Properties of Ternary Composites via Plasticizer-Induced Dense Interfaces

Feng

Peng

et al. 2018

Materials

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High overall performance, including high dielectric constant, low loss, high breakdown strength, fine flexibility, and strong tensile properties, is difficult to achieve simultaneously in polymer nanocomposites. In our prior work, we modified the surfaces of alpha-SiC nanoparticles and chemically cross-linked the polymeric matrix to simultaneously promote the dielectric and mechanical properties of composites. In this work, a novel strategy of high-temperature plastification towards a polymeric matrix has been proposed to fabricate ternary nanocomposites with balanced dielectric and mechanical characteristics by the solution cast method in order to reduce costs and simplify steps during large-scale preparation. Poly(vinylidene fluoride-chlorotrifluoroethylene) with inner double bonds as matrix, unfunctionalized alpha-SiC nanoparticles (NPs) as filler, and dibutyl phthalate (DBP) as plasticizer were employed. By introducing DBP and high-temperature treatment, the dispersion of NPs and the degree of compactness of the interface regions were both improved due to the reduced cohesion of the fluoropolymer, resulting in an increase in the dielectric constant (by 30%) and breakdown strength (by 57%) as well as the lowering of loss (by 30%) and conductivity (by 16%) in nanocomposites. Moreover, high-temperature plastification contributed to the promotion of flexible and tensile properties. This work might open the door to large-scale fabrication of nanocomposite dielectrics with high overall properties through the cooperation of the plasticizer and high temperature.

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“…In the past decade, inorganic/polymer composites have exhibited tremendous potential for high-performance capacitors owing to their inherent merits of large dielectric constant ( ε r ), good processability and excellent flexibility4567.…”

mentioning

confidence: 99%

In-situ preparation of hierarchical flower-like TiO2/carbon nanostructures as fillers for polymer composites with enhanced dielectric properties

Zhang

Yang

et al. 2017

Sci Rep

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Novel three-dimensional hierarchical flower-like TiO2/carbon (TiO2/C) nanostructures were in-situ synthesized via a solvothermal method involving calcination of organic precursor under inert atmosphere. The composite films comprised of P (VDF-HFP) and as-prepared hierarchical flower-like TiO2/C were fabricated by a solution casting and hot-pressing approach. The results reveal that loading the fillers with a small amount of carbon is an effective way to improve the dielectric constant and suppress the dielectric loss. In addition, TiO2/C particles with higher carbon contents exhibit superiority in promoting the dielectric constants of composites when compared with their noncarbon counterparts. For instance, the highest dielectric constant (330.6) of the TiO2/C composites is 10 times over that of noncarbon-TiO2-filled ones at the same filler volume fraction, and 32 times over that of pristine P (VDF-HFP). The enhancement in the dielectric constant can be attributed to the formation of a large network, which is composed of local micro-capacitors with carbon particles as electrodes and TiO2 as the dielectric in between.

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Enhanced dielectric and mechanical properties in chlorine-doped continuous CNT sheet reinforced sandwich polyvinylidene fluoride film

Cited by 66 publications

References 51 publications

Enhancing neural differentiation of induced pluripotent stem cells by conductive graphene/silk fibroin films

Enhancing neural differentiation of induced pluripotent stem cells by conductive graphene/silk fibroin films

Enhanced Dielectric and Mechanical Properties of Ternary Composites via Plasticizer-Induced Dense Interfaces

In-situ preparation of hierarchical flower-like TiO2/carbon nanostructures as fillers for polymer composites with enhanced dielectric properties

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