Synthesis and characterization of PVDF/PMMA/ZnO hybrid nanocomposite thin films for humidity sensor application

Khaleel, Ali K.; Abbas, Lamia K.

doi:10.1016/j.ijleo.2022.170288

Cited by 15 publications

(3 citation statements)

References 38 publications

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“…A very homogeneous microstructure is observed in the sample with the addition of 0.1% by weight of alumina. When the ratio by weight is 0.25%, alumina particles are homogeneously distributed on the surface [44]. At rates higher than 0.25%, it was observed that the particles were agglomerated [45].…”

Section: Microstructural Analysismentioning

confidence: 98%

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Samsun

Alkan

Basaran

et al. 2023

Preprint

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Considering the application areas of ceramic materials (ceramic sinks, toilet bowls, washing areas, ceramic tiles tableware), the demand for improving dirt and water repellent properties is increasing day by day with the perception of hygiene and cleanliness that affects the whole world. In this study, super-hydrophobic solutions were prepared and applied to ceramic substrates by adding alumina particles with different particle size distributions into the polyvinylidene fluoride (PVDF) matrix. Alumina powders added to the PVDF matrix at four different rates to obtain composite materails. Alumina powders with two different particle sizes, coarse and fine, was used and the effect of grain size on the properties was investigated. The adhesion performance of the coatings was determined by brush tests. In addition, surface roughness values, colour variation after coating, and anti-icing performance were also evaluated. It was observed that the coating with the (PVDF:Al2O3) ratio (1:0.25) had the highest contact angle and adhesion property.

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Section: Microstructural Analysismentioning

confidence: 98%

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Samsun

Alkan

Basaran

et al. 2023

Preprint

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“…These deviations were considered less than desirable. The study indicated that the spectra mentioned above are composed of tungsten (W) and oxide (O) produced from the WO 2 structure, together with carbon and oxide emerging from the PVDF/PEO structure [35].…”

Section: Edx Analysismentioning

confidence: 99%

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

Bardan,

Abbas

2024

IJP

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In this work, using the spin coating method to create polyvinylidene fluoride (PVDF)/polyethylene oxide (PEO) thin films, the effects of nano-tungsten oxide (WO2) doping were investigated. The novelty of this research lies in its investigation of varying weight concentrations of WO2 nanoparticles (NPs) within the composite films. Comprehensive characterization techniques were employed, including structural analysis via X-ray diffraction (XRD), which revealed a clear and prominent peak in the XRD of the PVDF/PEO films, and the films' polycrystalline nature with tetragonal structures. The grain size was noted to increase with higher WO2 NPs doping. Field emission scanning electron microscopy (FE-SEM) showed hexagonal-like α-phase PVDF crystals and uniform distribution of WO2 NPs. Furthermore, Fourier-transform infrared spectroscopy (FTIR) confirmed the characteristics of PVDF/PEO and identified specific doping compounds, confirming successful incorporation. The optical transmittance spectra unveiled the films' optical band gap energy, optical transition types, and absorption characteristics, where novelty emerged as the band gap energy significantly increased from 3.0 eV to 3.64 eV with an increased WO2 NPs weight doping percentage, signifying profound electronic structure modifications and potential applications in optoelectronics and sensors.

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“…In the context of humidity/moisture sensors, the nanofiber layer processed by electrospinning offers a significantly larger specific surface area compared to that of conventional coating films. This increased surface area enhances the sensor’s capability to absorb more water molecules, thereby improving its sensitivity to changes in humidity or moisture levels [ 16 , 32 , 33 , 34 ], while the exceptional properties of aerogels, including their remarkably high surface area, extensive porosity, and low density, make them highly attractive for use in sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Brake Fluid Condition Monitoring by a Fiber Optic Sensor Using Silica Nanomaterials as Sensing Components

Ibrahim,

Petrík

2024

Sensors

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In the automotive industry, there has been considerable focus on developing various sensors for engine oil monitoring. However, when it comes to monitoring the condition of brake fluid, which is crucial for ensuring safety, there has been a lack of a secure online method for this monitoring. This study addresses this gap by developing a hybrid silica nanofiber mat, or an aerogel integrated with an optical fiber sensor, to monitor brake fluid condition. The incorporation of silica nanofibers in this hybrid enhances the sensitivity of the optical fiber glass surface by at least 3.75 times. Furthermore, creating an air gap between the glass surface of the optical fiber and the nanofibers boosts sensitivity by at least 5 times, achieving a better correlation coefficient (R2 = 0.98). In the case of silica aerogel, the sensitivity is enhanced by 10 times, but this enhancement relies on the presence of the established air gap. The air gap was adjusted to range from 0.5 mm to 1 mm, without any significant change in the measurement within this range. The response time of the developed sensor is a minimum of 15 min. The sensing material is irreversible and has a diameter of 2.5 mm, making it easily replaceable. Overall, the sensor demonstrates strong repeatability, with approximately 90% consistency, and maintains uncertainty levels below 5% across specific ranges: from 3% to 6% for silica aerogel and from 5% to 6% for silica nanofibers in the presence of an air gap. These findings hold promise for integrating such an optical fiber sensor into a car’s electronic system, enabling the direct online monitoring of brake fluid quality. Additionally, the study elucidates the effect of water absorption on the refractive index of brake fluid, as well as on the silica nanomaterials.

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Synthesis and characterization of PVDF/PMMA/ZnO hybrid nanocomposite thin films for humidity sensor application

Cited by 15 publications

References 38 publications

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

Brake Fluid Condition Monitoring by a Fiber Optic Sensor Using Silica Nanomaterials as Sensing Components

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