Piezoelectric sensor based on electrospun poly(vinylidene fluoride)/sulfonated poly(1,4‐phenylene sulfide) blend nonwoven fiber mat

Abstract

Electrospun poly(vinylidene fluoride) (PVDF)/sulfonated poly(1,4‐phenylene sulfide) (sPPS) blend nanofiber webs are prepared to investigate the changes in piezoelectric behavior of PVDF as a function of sPPS content using spectral and electrical measurements. Initial fourier transform infrared (FTIR) spectral analysis carried out using PVDF/sPPS as‐cast films provides useful information about the preferential formation of the β‐crystalline phase in PVDF. Even with the addition of 10 wt% of sPPS, β‐crystalline absorbance increases significantly in as‐cast PVDF film at the expense of a corresponding decrease in α‐crystalline absorbance. Cyclic–voltammetric analysis confirms the redox behavior of sPPS and its influence on improving the performance of PVDF/sPPS blend‐based piezoelectric sensor through hydrogen bonding and ion‐dipole interactions. The piezoelectric output signal recorded using PVDF/sPPS blend (95:5) nanofiber web shows ~4.4 times increase in output signal amplitude compared to that of neat PVDF based sensor, which is an evidence that the PVDF/sPPS nanofiber web material can be used as a commercially viable flexible pressure sensor.

Bi-filler Interacted β-Phase Enhancement in Polyvinylidene Fluoride Composited with Cellulose Nanocrystals and Nickel Ferrite: A Multifunctional Energy Harvester and Sleep Monitoring Sensor

“…8−10 Among them, poly(vinylidene fluoride) (PVDF) and its copolymers gained special attention due to its flexibility, ease of processing, and nontoxic nature. 11,12 PVDF is a semicrystalline polymer that possesses five crystalline phases, namely, α, β, γ, δ, and ε. Among them, the β-crystalline phase is regarded as piezoelectric owing to its largest dipole moment per unit cell, which makes them undergo spontaneous polarization under an electric field or applied force when structurally deformed.…”

Piezoelectric and Triboelectric Contributions by Aromatic Hyperbranched Polyesters of Second-Generation/PVDF Nanofiber-Based Nanogenerators for Energy Harvesting and Wearable Electronics

“…27−29 Despite their high performance, inorganic materials used as piezoelectric active layers such as zinc oxide, 30,31 BaTiO 3 , 32,33 and PZT 34,35 exhibit rigidity and mechanical brittleness, which limit their utilization in flexible energy harvesters and wearable devices. In this case, piezoelectric polymers like polyvinylidene fluoride (PVDF) 36,37 have drawn a lot of interest from researchers due to their superior machinability and mechanical flexibility. 38,39 PVDF has many excellent properties, such as low cost, lightweight design, chemical stability, adjustable strain modulus, ease of shaping, low power consumption, biocompatibility, and biodegradability, which are vital parameters required for the sustainable progress of stretchable/flexible energy harvesting and wearable devices.…”

Enhanced the dielectric and piezoelectric properties of polyacrylonitrile piezoelectric composite fibers filled with ionic liquids

“…Therefore, piezoelectric sensors based on nanofibers have received extensive attention due to their good flexibility, high conversion efficiency, easy processing, and low price to meet people's needs under different conditions. [1][2][3][4][5][6][7][8] As an important part of piezoelectric sensors, the choice of piezoelectric materials becomes particularly important. 9 Compared with other materials, piezoelectric ceramic materials have good piezoelectric properties.…”

“…This electronic device can convert pressure into electrical signals when stimulated by external pressure, thereby enabling low‐power devices to be powered. Therefore, piezoelectric sensors based on nanofibers have received extensive attention due to their good flexibility, high conversion efficiency, easy processing, and low price to meet people's needs under different conditions 1–8 …”