Morphological changes towards enhancing piezoelectric properties of PVDF electrical generators using cellulose nanocrystals

Fashandi, Hossein; Abolhasani, Mohammad Mahdi; Sandoghdar, Parastoo; Zohdi, Nima; Li, Quanxiang; Naebe, Minoo

doi:10.1007/s10570-016-1070-3

Cited by 52 publications

(25 citation statements)

References 67 publications

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“…The maximum increase in diameter in case of GO was due to interactions caused by hydroxyl and carboxyl groups of GO nanosheets [134]. Similarly, Fashandi et al [135] produced cellulose nanocrystals/PVDF nanofibers and reported that the fiber diameter initially increased from 439 nm to 718 nm with the incorporation of 1 wt% cellulose nanocrystals. Upon further loading, fiber diameter decreased (552 nm at 3 wt% and 559 nm at 5 wt% cellulose nanocrystals) [135].…”

Section: Fiber Diametermentioning

confidence: 92%

“…Similarly, Fashandi et al [135] produced cellulose nanocrystals/PVDF nanofibers and reported that the fiber diameter initially increased from 439 nm to 718 nm with the incorporation of 1 wt% cellulose nanocrystals. Upon further loading, fiber diameter decreased (552 nm at 3 wt% and 559 nm at 5 wt% cellulose nanocrystals) [135]. It should be noted that in all samples containing cellulose nanocrystals, fiber diameter is greater than neat PVDF fibers [135].…”

Section: Fiber Diametermentioning

confidence: 95%

“…Upon further loading, fiber diameter decreased (552 nm at 3 wt% and 559 nm at 5 wt% cellulose nanocrystals) [135]. It should be noted that in all samples containing cellulose nanocrystals, fiber diameter is greater than neat PVDF fibers [135]. Tandon et al [30] produced HA/PVDF nanofibers where mean fiber diameter increased after the incorporation of HA (~550 nm for neat PVDF and ~700 nm for HA/PVDF samples).…”

Section: Fiber Diametermentioning

confidence: 99%

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Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

et al. 2020

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Polyvinylidene fluoride (PVDF)-based piezoelectric materials (PEMs) have found extensive applications in energy harvesting which are being extended consistently to diverse fields requiring strenuous service conditions. Hence, there is a pressing need to mass produce PVDF-based PEMs with the highest possible energy harvesting ability under a given set of conditions. To achieve high yield and efficiency, solution blow spinning (SBS) technique is attracting a lot of interest due to its operational simplicity and high throughput. SBS is arguably still in its infancy when the objective is to mass produce high efficiency PVDF-based PEMs. Therefore, a deeper understanding of the critical parameters regarding design and processing of SBS is essential. The key objective of this review is to critically analyze the key aspects of SBS to produce high efficiency PVDF-based PEMs. As piezoelectric properties of neat PVDF are not intrinsically much significant, various additives are commonly incorporated to enhance its piezoelectricity. Therefore, PVDF-based copolymers and nanocomposites are also included in this review. We discuss both theoretical and experimental results regarding SBS process parameters such as solvents, dissolution methods, feed rate, viscosity, air pressure and velocity, and nozzle design. Morphological features and mechanical properties of PVDF-based nanofibers were also discussed and important applications have been presented. For completeness, key findings from electrospinning were also included. At the end, some insights are given to better direct the efforts in the field of PVDF-based PEMs using SBS technique.

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Section: Fiber Diametermentioning

confidence: 92%

Section: Fiber Diametermentioning

confidence: 95%

Section: Fiber Diametermentioning

confidence: 99%

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Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

et al. 2020

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“…The application of twisted fibers in piezoelectric constructs has also been demonstrated in other publications. [128,129] He et al [127] used electrospinning and subsequent hot pressing to produce P(VDF- some additives like inorganic salt, [130] inorganic piezoelectric nanoparticles and nanowires, [118,[131][132][133] cellulose nanocrystals, [135] and multi-walled carbon nanotubes, [136] have been used into polymer solutions to form composites with attractive properties for energy harvesting devices.…”

Section: Energy Harvestersmentioning

confidence: 99%

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Azimi

Milazzo

Lazzeri

et al. 2019

Adv Healthcare Materials

111

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The field of nanotechnology has been gaining great success due to its potential in developing new generations of nanoscale materials with unprecedented properties and enhanced biological responses. This is particularly exciting using nanofibers, as their mechanical and topographic characteristics can approach those found in naturally occurring biological materials. Electrospinning is a key technique to manufacture ultrafine fibers and fiber meshes with multifunctional features, such as piezoelectricity, to be available on a smaller length scale, thus comparable to subcellular scale, which makes their use increasingly appealing for biomedical applications. These include biocompatible fiber-based devices as smart scaffolds, biosensors, energy harvesters and nanogenerators for the human body. This paper provides a comprehensive review of current studies focused on the fabrication of ultrafine polymeric and ceramic piezoelectric fibers specifically designed for, or with the potential to be translated toward, biomedical applications. It provides an applicative and technical overview of the biocompatible piezoelectric fibers, with actual and potential applications, an understanding of the electrospinning process, and the properties of nanostructured fibrous materials, including the available modeling approaches. Ultimately, this This article is protected by copyright. All rights reserved. 3 review aims at enabling a future vision on the impact of these nanomaterials as stimuli-responsive devices in the human body.

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“…Polyvinylidene fluoride (PVDF) and its copolymer P(VDF-TrFE) are emerging piezoelectric polymer with unique features including biocompatibility, high power density, and high flexibility, especially promising for wearable devices powered by such flexible sensors [24] and harvesters [14,25,26]. Recently, various PVDF-based generators with different functional morphologies, including multiple structure films [27,28,29], nanofibers [30], nanotubes [31], and other nano-patterns [32] have been used for the design of novel flexible wearable/implantable devices. In particular, previous reports described that the electric field and associated extensional forces produced by electrospinning methods naturally cause local poling for piezoelectric nanofibers [20,33,34].…”

Section: Introductionmentioning

confidence: 99%

A Flexible Piezoelectric Nanogenerator Based on Aligned P(VDF-TrFE) Nanofibers

et al. 2019

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Aligned P(VDF-TrFE) nanofibers are successfully fabricated by advanced electrospinning. The aligned feature of the nanofibers is achieved by using parallel electrodes, which is fabricated by lithography and wet etching, and a rotating drum collector. Scanning electron microscope (SEM) images show that the nanofibers are highly ordered with a smooth surface and uniform diameter. X-ray diffraction (XRD) and Fourier Transform Infrared spectrum (FTIR) tests indicate that the fibers contain high β phase content. The nanogenerator based on aligned P(VDF-TrFE) nanofibers exhibits good electric performance with a maximum output voltage as high as 12 V and peak-peak short circuit current about 150 nA, highlighting the potential application of P(VDF-TrFE) on self-powered and wearable devices.

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Morphological changes towards enhancing piezoelectric properties of PVDF electrical generators using cellulose nanocrystals

Cited by 52 publications

References 67 publications

Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

Electrospinning Piezoelectric Fibers for Biocompatible Devices

A Flexible Piezoelectric Nanogenerator Based on Aligned P(VDF-TrFE) Nanofibers

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