A study of optical, mechanical and electrical properties of poly(methacrylic acid)/TiO2 nanocomposite

Al-Baradi, Ateyyah M.; Al-Shehri, Samar F.; Badawi, Ali; Merazga, Amar; Atta, A.A.

doi:10.1016/j.rinp.2018.03.039

Cited by 24 publications

(14 citation statements)

References 19 publications

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“…The shift is due to the change in the energy of the lowest unoccupied molecular orbital (LUMO) of the ligand that causes the π-π* and dπ-π* transitions to occur at a lower energy [21]. This result is in agreement with [22,23].…”

Section: Resultssupporting

confidence: 59%

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Haider

Al-Shibaany

Hawy

et al. 2020

ZJMT

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In this work, nanocomposite material consisting of titanium dioxide (TiO2) nanoparticles and rhodamine 6G (R6G) laser dye was doped with different ratios of polystyrene (PS) and polymethylmethacrylate (PMMA) polymer blends (i.e. 40% PS/60% PMMA and 50% PS/50% PMMA) using the casting method. The optical properties of the prepared samples were measured using UV-visible spectroscopy. These measurements include the calculations of the absorption (A%), absorption coefficient (α), energy gap (Eg), refractive index (n), extinction coefficient (K) and real and imaginary parts. These nanocomposite materials were investigated using a scanning electron microscope and photoluminescence (PL) spectra emission. The SEM results show that the optimum results were at 50% PS/50% PMMA/TiO2/R6G with all the dye being decorated in the process blend, while the TiO2 nanoparticle demonstrated that the pores were incomplete in some places and complete in others. The optical results show that there are red shifts in all absorption peaks caused by the increased PS ratio. The Eg decreased from 3.2 eV to 2.8 eV as the concentration of PS in the polymer matrix increased. The PL spectrum for the nanocomposites, with a different ratio of PS, shows that sharp peaks of PL emission occur at a wavelength of 570 nm and shift towards longer wavelengths with an increased PS%.

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Section: Resultssupporting

confidence: 59%

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Haider

Al-Shibaany

Hawy

et al. 2020

ZJMT

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“…Nanocomposites are multi‐phase solid materials in which the fillers have at least one dimension ≤100 nm. Owing to the high surface area to volume ratio of the nano‐sized fillers combined with the quantum size effect, nanocomposite materials often exhibit improved properties compared with their bulk counterparts . Polyacrylamide (PAAM) is a synthetic linear, insulating and polar polymer having (CO‐NH 2 ) groups that have strong interfacial interactions with other polymers and enable the polymer to form hydrogen bonds with drug molecules, facilitating drug diffusion and release .…”

Section: Introductionmentioning

confidence: 99%

Influence of MWCNTs in Improving the Optical, DC Conductivity, and Mechanical Properties of CMC/PAAM Blends

El‐Gamal

Sayed

2020

Polymer Engineering & Sci

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Enhancing the optical, electrical, and mechanical properties of polymeric materials, by blending with another material and doping with nano-fillers, is crucial for improving their performance in optoelectronic, biological, and medical applications. In this work, the influence of adding multiwalled carbon nanotubes (MWCNTs) on the physical properties of carboxymethyl cellulose/polyacrylamide blends is reported. Scanning electron microscopy was used for investigating films' surface morphology and revealed good distribution of MWCNTs on the blend surface. UV-vis-IR spectroscopy showed that absorption and refractive indices, and other dispersion parameters could be controlled by adjusting the films' compositions. Loading 2 wt% MWCNTs narrowed the optical bandgap of the blend from 5.1 to 4.1 eV. Doping with MWCNTs raised the DC conductivity by about two orders of magnitude by forming threedimensional pathways within the blend matrix. The storage modulus increased with MWCNTs loading by 39.3% for the 2 wt% ratio while decreasing with increasing temperature.

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“…This is because the SF shows absorption at 300 nm which is assigned to the π → π* transition of the tyrosine, phenylalanine and tryptophan residues in the SF molecular chain 36 . TiO 2 nanoparticles have the inherent property of absorbing UV radiation and so do many polymers such as polypropylene, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl acetate 17,19,20,33,76–78 . It was observed that pure SF film shows a low amount of absorption compared to SF/TiO 2 nanocomposite films.…”

Section: Resultsmentioning

confidence: 99%

“…[29][30][31] Polymers such as PMMA, poly(methacrylic acid), trialkoxysilane-capped PMMA, epoxy and polyvinyl alcohol have been doped with TiO 2 nanoparticles to obtain high refractive index (1.49-2.31) nanocomposites. 7,[31][32][33][34] High refractive index materials are progressively dominant in the optoelectronics field. They are mainly used for enhancing the visual properties of electronic displays including liquid-crystal displays, organic light-emitting diodes and quantum dot light-emitting diode televisions.…”

Section: Introductionmentioning

confidence: 99%

N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties

Yadav

Batra

Bansal

et al. 2021

Polymer International

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This paper highlights the effect of different concentrations of titanium dioxide (TiO2) nanoparticles on the electrical and optical properties of silk fibroin (SF). TiO2 based SF nanocomposite films were prepared using the solvent casting method. Uniform dispersion and agglomeration of nanoparticles, in nanocomposite films, were observed by field emission SEM. The conductivity of pure SF and nanocomposite films was determined by a four‐point probe and the TiO2 nanoparticles were found to bring high conductivity to the nanocomposite films. Dielectric strength improved with the addition of nanoparticles to the SF matrix. Dielectric constant and capacitance of the pure SF and nanocomposite films were measured using an LCR meter, which showed a 10‐fold enhancement on the addition of nanoparticles in SF. A very unusual property, i.e. negative resistance, was observed during LCR meter analysis for the nanocomposite films for a particular range of frequency (200–550 kHz), voltage (1 V) and current (0.5–1.5 μA). TiO2 nanoparticles changed the semiconducting behavior of the SF films from p‐type to n‐type as measured by the Hall effect experiment. The optical properties of pure SF and nanocomposite films were measured using a UV–visible spectrophotometer. The increased concentration of nanoparticles in the SF has effectively enhanced the absorbing coefficient, refractive index and percentage transmittance and reduced the bandgap energy. These SF/TiO2 nanocomposite films have shown the potential to be used as dielectric and high refractive index material for optoelectronics applications. © 2021 Society of Industrial Chemistry.

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A study of optical, mechanical and electrical properties of poly(methacrylic acid)/TiO2 nanocomposite

Cited by 24 publications

References 19 publications

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Influence of MWCNTs in Improving the Optical, DC Conductivity, and Mechanical Properties of CMC/PAAM Blends

N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties

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A study of optical, mechanical and electrical properties of poly(methacrylic acid)/TiO2 nanocomposite

Cited by 24 publications

References 19 publications

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Influence of MWCNTs in Improving the Optical, DC Conductivity, and Mechanical Properties of CMC/PAAM Blends

N‐type silk fibroin/TiO2 nanocomposite transparent films: electrical and optical properties

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N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties