Development of strain sensor using conductive poly(vinylidene fluoride) (PVDF) nanocomposite membrane reinforced with ionic liquid (IL) &amp; carbon nanofiber (CNF)

Prasad, Brijesh; Gill, Fateh Singh; Panwar, Varij; Anoop, Gopinathan

doi:10.1016/j.compositesb.2019.106990

Cited by 48 publications

(23 citation statements)

References 41 publications

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“…Recently, ionic liquid (IL) modified PVDF and its nanocomposites, such as PVDF/graphene 21,22 and PVDF/MWCNT 23,24 blends have been reported by some researchers. IL is a molten salt composed of organic cation and inorganic anion at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids

Liu

Zhao

et al. 2022

J of Applied Polymer Sci

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Poly(vinylidene fluoride) (PVDF) based nano dielectric composites have been investigated widely due to their potential application in sensors, actuators, and energy storage fields. To achieve these goals, a novel modification of PVDF electroactive films was prepared due to the exfoliated and oriented Na + -MMT with the assistance of different cationic chain length imidazole-based ionic liquids.The results proved the ion exchange between Na + -MMT and ILs promoted exfoliation and uniform dispersion of Na + -MMT in PVDF matrix efficiently even under a low ILs content (<0.05%). Furthermore, the existence of ILs and shearing force contributed to the oriented dispersion of Na + -MMT. The synergistic effect of Na + -MMT and ILs induced the crystal conformation transition from non-polar α-crystal to electroactive β/γ crystal. The ILs with longer cationic chains behaved much higher inducibility for PVDF electroactive phases. Compared with pure PVDF, PVDF/Na + -MMT/ILs nanocomposites with longer cationic chain ILs showed higher dielectric constant, breakdown strength, and energy density, while kept low-dielectric loss and conductivity. The improved compatibility between PVDF and Na + -MMT due to the ion exchange and decreased crystal size for the polar β/γ crystal enhanced the transparency and elongation at break of PVDF/ Na + -MMT/ILs nanocomposites significantly. The results proved [C16MIM] [Cl] behaved optimum synergistic modification effect for the nanocomposites, and which showed potential applications in dielectric energy storage and microelectronic fields.

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Section: Introductionmentioning

confidence: 99%

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids

Liu

Zhao

et al. 2022

J of Applied Polymer Sci

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“…Further, with the increase in concentration of CNF the connecting channels has also increased. Moreover, infiltration of PSSA in PVDF also increased the sulphonic groups attached to the carbon-based compounds very easily thus improving the superficial bonding and flow of charge through the membrane [33,41]. The presence of PSSA and CNF inside the PVDF can be seen in Fig.…”

Section: Morphological Characterizationmentioning

confidence: 87%

“…The well disperse MWCNTs in PVDF matrix were attributed to presence of IL as an interface linker, which can further tune the strain sensing capabilities and electrical conductivity of the CPNCs. Prasad et al [33] fabricated CPNC membranes using CNF/PVDF and Ionic Liquid/PVDF/CNF for pressure sensing applications. The interaction of IL and CNF produced a shift of PVDF from α phase to β phase which supported facile flow of the ions through membrane.…”

Section: Introductionmentioning

confidence: 99%

Piezoresistive sensitivity tuning using polyelectrolyte as interface linker in carbon based polymer composites

Chaturvedi

Panwar

Prasad

2020

Sensors and Actuators A: Physical

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“…It is unique in the preparation of lightweight, small, flexible, and bendable sensors, and it is an ideal material for manufacturing wearable flexible sensors. [ 1 ] At present, PVDF has been made into various electrical components, and is gradually developing in the direction of high technology and intelligence. It can be described as a promising new piezoelectric material.…”

Section: Introductionmentioning

confidence: 99%

Direct writing polyvinylidene difluoride thin films by intercalation of nano‐ZnO

Chen

Zhang

Zhu

et al. 2021

Polymer Engineering & Sci

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Polyvinylidene fluoride (PVDF) is a preeminent pyrolytic and piezoelectric polymer. It has been widely studied as an ideal material for wearable flexible sensors or low‐power electronic equipment. PVDF/ZnO thin films were prepared by direct writing method, which promoted the ordered arrangement of PVDF molecular chains under the action of electric field and thus improved the crystallinity of the β phase. Meanwhile, the effects of intercalation of ZnO nanoparticles on the crystallinity of PVDF thin films were explored. The results show that appropriate addition of nano‐ZnO as nucleating agent can induce the crystallinity of the PVDF film obviously. While the additive amount of nanoparticles was 0.02 wt%, the relative β phase content of the PVDF film can reach 88.92%. Under the double action of adding ZnO nanoparticles and electric field assistance, the dielectric constant of the composite film increases from 6.9 (pure PVDF) to 12.4 (0.03 wt% ZnO) at a frequency of 1 kHz. The d33 value of the film without polarization is up to −9.1 pC/N, the output voltage is increased to 351 mV, and the conductivity of the composite film has been improved.

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Development of strain sensor using conductive poly(vinylidene fluoride) (PVDF) nanocomposite membrane reinforced with ionic liquid (IL) & carbon nanofiber (CNF)

Cited by 48 publications

References 41 publications

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids

Piezoresistive sensitivity tuning using polyelectrolyte as interface linker in carbon based polymer composites

Direct writing polyvinylidene difluoride thin films by intercalation of nano‐ZnO

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Development of strain sensor using conductive poly(vinylidene fluoride) (PVDF) nanocomposite membrane reinforced with ionic liquid (IL) & carbon nanofiber (CNF)

Cited by 48 publications

References 41 publications

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na+‐MMT with assistance of different cationic chain length ionic liquids

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na+‐MMT with assistance of different cationic chain length ionic liquids

Piezoresistive sensitivity tuning using polyelectrolyte as interface linker in carbon based polymer composites

Direct writing polyvinylidene difluoride thin films by intercalation of nano‐ZnO

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Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids

Cooperative modification of PVDF electroactive films due to the exfoliated and oriented Na⁺‐MMT with assistance of different cationic chain length ionic liquids