Investigation of optical properties of aluminium oxide doped polystyrene polymer nanocomposite films

Bhavsar, S. R.; Patel, Gnansagar B.; Singh, Navjot

doi:10.1016/j.physb.2017.12.055

Cited by 29 publications

(8 citation statements)

References 11 publications

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“…The peak observed at 2745 cm À1 belongs to the vibration band of the -CH 2 band, while the peak seen at The two bands observed in the 721 and 595 cm À1 regions are the characteristic bands of the -CH-group in the structure of the benzene ring, and the planar bending vibrations of the benzene ring (Yang et al, 2002). The stretching vibration band of the C--O carbonyl group, which should be at 1700 cm À1 and pointing to the charge transfer reaction between PS polymer and Al 2 O 3 -NP (Bhavsar et al, 2018), was not observed in our experimental results. Thus, it can be said that the bond between PS polymer and Al 2 O 3 -NP is adsorption due to weak interaction or electrostatic interaction.…”

Section: Resultsmentioning

confidence: 92%

Production of nanoporous alumina membranes modified with multi‐walled carbon nanotube, polyacrylamide and polystyrene and use in wastewater treatment

Aydın

Ateş

Yazıcı

2022

Water & Environment J

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In this study, the nanofiltration materials having high selectivity, high filtration and mechanical resistance have been developed for the removal of organic contaminants in wastewater. Al2O3‐NP membranes were modified with multi‐walled carbon nanotube (MWCNT), polyacrylamide‐MWCNT (PA‐MWCNT) and polystyrene‐MWCNT (PS‐MWCNT) to provide better performance in the treatment of wastewater. The evaluation of the separation performance of the prepared membranes was carried out at 25°C using a vacuum filtration unit. Congo red (CR) and methylene blue (MB) dyes were selected as model pollutants. The results showed that the flux value was higher in the unmodified membrane, and the Al2O3‐NP membrane modified with MWCNT exhibited high removal efficiency among the modified membranes.

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Section: Resultsmentioning

confidence: 92%

Production of nanoporous alumina membranes modified with multi‐walled carbon nanotube, polyacrylamide and polystyrene and use in wastewater treatment

Aydın

Ateş

Yazıcı

2022

Water & Environment J

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“…Bands at 762 cm −1 and 3002 cm −1 corresponded to an out of plane C–H bending mode and the C–H stretching mode of the phenyl ring. Bands appearing at 1451, 1494, and 1602 cm −1 could be accounted for by the C=C stretching mode …”

Section: Resultsmentioning

confidence: 99%

Effect of γ‐irradiation on thermal and thermoluminescence properties of polystyrene/europium (III) oxide composite film

Bhavsar

Singh

2019

Luminescence

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In the present study, polystyrene:europium (III) oxide polymer films at a ratio of 95:5 wt% were prepared using a solution casting technique. These polymeric films were irradiated with 5, 25 and 50 kGy γ-radiation doses and their thermoluminescence (TL) and thermal properties were studied as a function of radiation dose. Analysis of Fourier transform infrared spectra revealed different modes of vibration and polymer-filler interaction. Reduction of vibrational modes with radiation dose was observed. The TL glow curve intensity was observed to increase with increasing radiation dose and to become broader in the 378 K and 444 K regions. Detrapping of electrons implied by the glow curve was caused by thermally induced macromolecular motion, concurrent with β-relaxation in polystyrene. The TL glow curve parameters were computed using a glow curve deconvolution method. Differential scanning calorimetry analysis indicated that the glass transition temperature (T g ) increased with increase in dose, suggesting crosslinking of the polymer chain. Scanning electron microscopy analysis evidenced the change in surface morphology due to γirradiation. K E Y W O R D S europium (III) oxide, γ-irradiation, polystyrene, thermoluminescence 1 | INTRODUCTION Polymers have received more attention and increased interest from scientists and researchers for potential application in the fields of science and technology. Compared with other host matrices, polymers have become a more favourable host matrix for optical and electronic applications. Devices made from polymers have become more flexible, are of high mechanical strength, and are light in weight. In this study, polystyrene (PS) was used as a host because of its excellent mechanical strength, good thermal resistance, and good chemical stability. As per requirement, alterations in the properties of polymer can be carried out by doping with metal oxides such as Al 2 O 3 , ZnO and TiO 2 .But rather than using metal oxides, rare earth ions are more useful because they show vibronic characteristics in the optical spectrum.Among all rare earth ions, Eu 3+ ions are widely used due to their electronic transition of excitation, emission, and absorption spectra, caused by the occurrence of vibronic characteristics. [1] However, rare

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“…Polystyrene (PS) is a highly stable and non-polar linear polymer that contains benzene as a pendant group ( Bhavsar et al, 2018 ; Shakeri et al, 2022a ). Its exceptional properties, including high mechanical and thermal stability, chemical resistance, biocompatibility, and optical transparency, make it an attractive material for microfluidic device fabrication ( de Oliveira et al, 2021 ; Zhou et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

“…Its exceptional properties, including high mechanical and thermal stability, chemical resistance, biocompatibility, and optical transparency, make it an attractive material for microfluidic device fabrication ( de Oliveira et al, 2021 ; Zhou et al, 2021 ). Furthermore, PS substrates can have their optical properties adjusted by incorporating various dopants in their structure, making it possible to tailor the optical properties of PS substrates to suit specific applications in microfluidics ( Bhavsar et al, 2018 ; Sivakumar & Lee, 2020 ). However, it is important to note that PS can undergo degradation or physical and chemical changes upon exposure to light of wavelengths below 380 nm ( Bhavsar et al, 2018 ).…”

Section: Methodsmentioning

confidence: 99%

Breaking the clean room barrier: exploring low-cost alternatives for microfluidic devices

Rodríguez

Andrade-Pérez

Vargas

et al. 2023

Front. Bioeng. Biotechnol.

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Microfluidics is an interdisciplinary field that encompasses both science and engineering, which aims to design and fabricate devices capable of manipulating extremely low volumes of fluids on a microscale level. The central objective of microfluidics is to provide high precision and accuracy while using minimal reagents and equipment. The benefits of this approach include greater control over experimental conditions, faster analysis, and improved experimental reproducibility. Microfluidic devices, also known as labs-on-a-chip (LOCs), have emerged as potential instruments for optimizing operations and decreasing costs in various of industries, including pharmaceutical, medical, food, and cosmetics. However, the high price of conventional prototypes for LOCs devices, generated in clean room facilities, has increased the demand for inexpensive alternatives. Polymers, paper, and hydrogels are some of the materials that can be utilized to create the inexpensive microfluidic devices covered in this article. In addition, we highlighted different manufacturing techniques, such as soft lithography, laser plotting, and 3D printing, that are suitable for creating LOCs. The selection of materials and fabrication techniques will depend on the specific requirements and applications of each individual LOC. This article aims to provide a comprehensive overview of the numerous alternatives for the development of low-cost LOCs to service industries such as pharmaceuticals, chemicals, food, and biomedicine.

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Investigation of optical properties of aluminium oxide doped polystyrene polymer nanocomposite films

Cited by 29 publications

References 11 publications

Production of nanoporous alumina membranes modified with multi‐walled carbon nanotube, polyacrylamide and polystyrene and use in wastewater treatment

Production of nanoporous alumina membranes modified with multi‐walled carbon nanotube, polyacrylamide and polystyrene and use in wastewater treatment

Effect of γ‐irradiation on thermal and thermoluminescence properties of polystyrene/europium (III) oxide composite film

Breaking the clean room barrier: exploring low-cost alternatives for microfluidic devices

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