Electrospun nanofiber reinforced all-organic PVDF/PI tough composites and their dielectric permittivity

Yun, Seong Dae; Chen, Linlin; Jiang, Shaohua; Ding, Yichun; Xu, Wenhui; Hou, Haoqing

doi:10.1016/j.matlet.2015.08.019

Cited by 52 publications

(17 citation statements)

References 23 publications

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“…In the study reported here, a yarn‐based capacitive torsion sensor was fabricated by a simple method via electrospinning coating. PVDF was used as the dielectric material due to its high dielectric constant . The dynamics of the electrospinning process were investigated based on visual evidence to obtain a suitable nanofiber structure of the dielectric layer, and the thickness of the layer was controlled by the electrospinning coating time.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Choi

Moon

Kim

et al. 2019

Polymer International

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A yarn‐based capacitive torsion sensor was produced using a simple electrospinning coating method. It was expected that nonwoven nanofiber mats, as a coating layer, would exhibit excellent performance owing to their high surface area and porous three‐dimensional nonwoven structure, which is more deformable than that of films. The electrospinning process was investigated by image analysis to generate a suitable structure of the nanofiber coating layer. The thickness of the layer was controlled by varying the electrospinning coating time (10, 20 and 30 min). Yarn sensors with coating layers of different thicknesses were manufactured by twisting two coated fibers, while simultaneously measuring the capacitance. The best sensitivity was observed with the 10 min coated yarn, due to the largest valid twist level range. It is proposed that the distance between the electrodes and the dielectric constant of the material play an important and complex role in the capacitive response of the twisted yarn, caused by the porous three‐dimensional nonwoven structure of the coated layer and the molecular mobility of the polymer. This simple coating method is expected to be useful in a wide range of applications, such as wearable devices, by facilitating convenient fabrication and repair of the flexible sensors. Moreover, high performance of the sensor could be realized due to the structural advantage of the sensing layer. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Choi

Moon

Kim

et al. 2019

Polymer International

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“…Electrospinning is a versatile process to produce polymer fibers with diameters ranging from several nanometers to micrometers under the application of an electric field. When the applied field overcomes the surface tension of polymer solution, a charged fluid stream is ejected from the tip of syringe onto a target collector [28][29][30][31][32]. Electrospun polymer membranes generally exhibit high porosity with interconnected open pores, and high surface area to volume ratio.…”

mentioning

confidence: 99%

Novel electrospun polyvinylidene fluoride-graphene oxide-silver nanocomposite membranes with protein and bacterial antifouling characteristics

Liu¹,

Shen²,

Liao³

et al. 2018

Express Polym. Lett.

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“…Polyimide (PI) is an important class of high‐performance polymer with excellent mechanical properties and thermal stability. The preparation and application of various electrospun PI nanofibers have been investigated by Hou and coworkers . For example, Chen et al .…”

Section: Introductionmentioning

confidence: 99%

High‐performance polyimide nanofibers reinforced polyimide nanocomposite films fabricated by co‐electrospinning followed by hot‐pressing

Ding

Huang

et al. 2018

J of Applied Polymer Sci

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The objective of this study was to develop aligned electrospun polyimide (PI) nanofibers (with rigid macromolecular backbone) reinforced PI (with flexible macromolecular backbone) nanocomposite films. Owing to uniform dispersion of aligned PI nanofibers and excellent interfacial adhesion/interaction between filler and matrix, the resulting nanocomposite films exhibited superior mechanical and thermal properties. The nanocomposite films were fabricated by co-electrospinning of two polyamic acids (PAAs) including a rigid PAA of poly(p-phenylene biphenyltetracarboximide) (BPDA-PDA) and a flexible PAA of poly(1,4-bis (3 0 ,4 0 -dicarboxyphenoxy) phenyldiphenyl ether tetramine) (HQDA-ODA); upon thermal imidization, hybrid PAA nanofiber belts (with different weight ratios of BPDA-PDA/ HQDA-ODA) were converted into hybrid PI nanofiber belts. Subsequently, these nanofiber belts were hot-pressed to fabricate HQDA-ODA PI nanocomposite films reinforced with BPDA-PDA PI nanofibers; in specific, the nanocomposite film consisting of 80 wt % BP-PI nanofibers exhibited the highest tensile strength and modulus of 957 AE 18 MPa and 12.32 AE 0.32 GPa, respectively. The nanocomposite films also possessed excellent thermal/thermomechanical properties. Therefore, these fiber-reinforced PI nanocomposite films might be promising high-performance structural/engineering materials that would be particularly useful for high-temperature applications. Moreover, the strategy of co-electrospinning hybrid nanofiber belts followed by hot-pressing could provide an innovative approach for making highperformance polymer-matrix composites.

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Electrospun nanofiber reinforced all-organic PVDF/PI tough composites and their dielectric permittivity

Cited by 52 publications

References 23 publications

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Fabrication of capacitive yarn torsion sensors based on an electrospinning coating method

Novel electrospun polyvinylidene fluoride-graphene oxide-silver nanocomposite membranes with protein and bacterial antifouling characteristics

High‐performance polyimide nanofibers reinforced polyimide nanocomposite films fabricated by co‐electrospinning followed by hot‐pressing

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