Stress effects on the impedance and ferroelectricity of PVDF- BiFeO3-MWCNT films using xanthan gum as dispersant

Sosa, Mariana D.; Levy, Ivana K.; Owusu, Francis; Nüesch, Frank; Opris, Dorina M.; Negri, R. Martı́n; Medina, Leila M. Saleh

doi:10.1016/j.matchemphys.2022.126175

Cited by 2 publications

(2 citation statements)

References 89 publications

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“…Composite materials based on PVDF and BFO have previously been reported [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48]. These works revealed many aspects of the procedures for synthesizing both nanoparticles and polymer composites via various methods.…”

Section: Introductionmentioning

confidence: 99%

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

et al. 2023

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The creation of multi-stimuli-sensitive composite polymer–inorganic materials is a practical scientific task. The combination of photoactive magneto-piezoelectric nanomaterials and ferroelectric polymers offers new properties that can help solve environmental and energy problems. Using the doctor blade casting method with the thermally induced phase separation (TIPS) technique, we synthesized a hybrid polymer–inorganic nanocomposite porous membrane based on polyvinylidene fluoride (PVDF) and bismuth ferrite (BiFeO3/BFO). We studied the samples using transmission and scanning electron microscopy (TEM/SEM), infrared Fourier spectroscopy (FTIR), total transmission and diffuse reflection, fluorescence microscopy, photoluminescence (PL), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), vibrating-sample magnetometer (VSM), and piezopotential measurements. Our results demonstrate that the addition of BFO increases the proportion of the polar phase from 76.2% to 93.8% due to surface ion–dipole interaction. We also found that the sample exhibits laser-induced fluorescence, with maxima at 475 and 665 nm depending on the presence of nanoparticles in the polymer matrix. Furthermore, our piezo-photocatalytic experiments showed that under the combined actions of ultrasonic treatment and UV–visible light irradiation, the reaction rate increased by factors of 68, 13, 4.2, and 1.6 compared to sonolysis, photolysis, piezocatalysis, and photocatalysis, respectively. This behavior is explained by the piezoelectric potential and the narrowing of the band gap of the composite due to the mechanical stress caused by ultrasound.

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Section: Introductionmentioning

confidence: 99%

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

et al. 2023

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“…[7,[14][15][16][17] There are several reviews on the synthesis and fabrication of piezoelectric materials and their application in wearable electronics, soft robotics, energy harvesting, sensors, actuators, and bioimplantable, among others. [18][19][20][21][22] Park et al presented a brief overview of flexible and stretchable piezoelectric nanocomposite generators for realizing self-powered energy systems focusing on development history, power performance, and applications. [23] Chorsi et al thoroughly reviewed different piezoelectric biomaterials focusing on operational principles, possible applications in biosensors and bioactuators, as well as their future opportunities and challenges.…”

Section: Introductionmentioning

confidence: 99%

How to Make Elastomers Piezoelectric?

Owusu

Venkatesan

Nüesch

et al. 2023

Adv Materials Technologies

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Piezoelectrics play a significant role in modern electronics and electric devices. Thermal or mechanical stress on such materials induces a change in polarization generating an electric response, which is the sole effect of why they are so interesting. However, most piezoelectrics are rigid and brittle ceramics and thus difficult to integrate into wearable electronics that comply with human skin or organs. To facilitate their incorporation into stretchable, so‐called next generation electronic devices, researchers have focused on developing piezoelectric materials with improved properties. Significant advances are achieved regarding flexibility. However, marrying piezoelectricity and elasticity proved challenging, as elastomers, with their amorphous flexible network structure, cannot keep polarization permanently. Here the most recent developments in the field of piezoelectric elastomers are reviewed, and potential future applications in sensors and energy harvesting are discussed.

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Stress effects on the impedance and ferroelectricity of PVDF- BiFeO3-MWCNT films using xanthan gum as dispersant

Cited by 2 publications

References 89 publications

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

How to Make Elastomers Piezoelectric?

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