Structural, optical and electrical studies of chitosan/polyacrylamide blend filled with synthesized selenium nanoparticles

Gami, Fatma; Algethami, Norah; Ragab, H.M.; Rajah, A. Joseph Lourdu; Tarabiah, A. E.

doi:10.1016/j.molstruc.2022.132631

Cited by 30 publications

(14 citation statements)

References 34 publications

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“…This image showed semi rectangular and cubic shapes of Li 4 Ti 5 O 12 NPs with average size range of 31-56 nm. 1,2,25 The pattern of pure blend exhibited a broad peak at approximately 21.60 , which denoted the amorphous nature of blend. According to Rajeh et al, 22 a characteristic peak for CMC was located at 2θ = 21.50 .…”

Section: Characterization Apparatusmentioning

confidence: 99%

“…The preparation of nanocomposites based on polymer nanoceramic compounds has become increasingly attention because it yields new multifunctional-flexible polymeric materials with high dielectric constant, low mass density, good processability, and excellent mechanical strength as well as low brittleness. [1][2][3] Therefore, these types of combinations can be used in various optoelectronic and discharge energy devices. [4][5][6][7] The spinel Li 4 Ti 5 O 12 NPs are cheap, environment friendly, 8,9 and has good lithium ions mobility as well as high lithiumion insertion/extraction with potential at 1.55 V. 10 Also, these NPs possess a high structure stability "zero-strain" in charge/discharge cycles and have the potency to reinforce the performance for secondary Li-ions batteries due to their short diffusion paths and high surface area.…”

Section: Introductionmentioning

confidence: 99%

“…The significant advantages of polymeric blends are the properties of the final products, which can be achieved to required applications, which cannot be obtain via a single polymer. 1,14,15 Latterly, the uses of biopolymers materials have increased special interest as they are plentiful in nature and eco-friendly. 16,17 The increasing interest in biodegradables materials have aggravate the scientists to investigate widely as polymers electrolyte system 4,18 Different renewable resources of polymers are suitable to act as host polymers involving the watersoluble polymers CMC and SA.…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of nanocomposites based on polymer nanoceramic compounds has become increasingly attention because it yields new multifunctional‐flexible polymeric materials with high dielectric constant, low mass density, good processability, and excellent mechanical strength as well as low brittleness 1‐3 . Therefore, these types of combinations can be used in various optoelectronic and discharge energy devices 4‐7 .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Abdallah

Morsi

Asnag

et al. 2022

Intl J of Energy Research

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Summary Nanocomposites samples of carboxymethyl cellulose (CMC)/sodium alginate (SA) blend (70/30 wt%)‐loaded lithium titanium oxide nanoparticles (Li4Ti5O12 NPs) were prepared using the casting method. X‐ray diffraction (XRD) spectra showed a decrease of the crystallinity with increasing Li4Ti5O12 concentrations. Fourier‐transform infrared (FT‐IR) inferred the interaction and complexation between the blend components (CMC/SA), also showed the interaction between Li4Ti5O12 and the functional groups of CMC/SA in particular CHOCH2 stretching, COO− stretching, and OH stretching vibrations. The optical properties of samples enhanced in optical energy gap as the concentration of Li4Ti5O12 increased. The differential scanning calorimetry (DSC) measurement showed that the pure sample has a single glass transition temperature (Tg), which denoted that the blend components were miscible. Also, DSC showed an enhancement in the thermal stability of polymeric blend after the addition of Li4Ti5O12. The highest value of AC conductivity was noticed at the highest concentration of Li4Ti5O12, which was also increased with increasing temperature. The maximum electrical conductivity obtained at 0.40 wt% of Li4Ti5O12 in the polymeric matrix is 9.35 × 10−6 S/cm at room temperature at 107 Hz. The complex permittivity (ε*) was decreased with the increase of both Li4Ti5O12 content and the temperature degree. At high frequencies, the decreasing trend of permittivity was assigned to dipoles orientation. These results indicated that CMC/SA/Li4Ti5O12 nanocomposites would be promising for energy storage capacitors applications and alternative separator rechargeable lithium‐ions batteries industries.

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Section: Characterization Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Abdallah

Morsi

Asnag

et al. 2022

Intl J of Energy Research

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Elucidation of the effect of hybrid copper/selenium nanofiller on the optical, thermal, electrical, mechanical properties and antibacterial activity of polyvinyl alcohol/carboxymethyl cellulose blend

Abdallah

Asnag²,

Morsi

et al. 2023

Polymer Engineering & Sci

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Polymer nanocomposite samples of a polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC) blend doped with copper nanoparticles and selenium nanoparticles (Cu NPs/Se NPs) were prepared by the casting method. X-ray diffraction analysis (XRD) patterns showed an increase in the degree of amorphous nature of the host polymeric matrix with increasing content of Cu/Se nanoparticles. The addition of 1.60 wt.%, Cu/Se NPs narrowed the indirect optical energy gap value of the nanocomposite from 3.97 to 2.39 eV. In addition, the differential scanning calorimetry (DSC) curve of the pure blend displays the miscibility of the blend components, confirmed by the presence of a single glass transition. Transmission electron microscopy (TEM) micrographs showed that the average sizes of Cu and Se nanoparticles are about 11 and 41 nm, respectively. The maximum values of AC and DC conductivity were 6.76 Â 10 À6 S.cm À1 and 5.49 Â 10 À10 for a PVA/CMC film filled with 1.60 wt.% of Cu-Se NPs. The mechanical properties of the PVA/CMC blend improved after adding the hybrid NPs. Moreover, the antibacterial activity of the prepared samples was increased due to the filling of Cu-Se nanoparticles to the films. Therefore, these results indicate the multifunctionality of PVA/CMC/Cu-Se nanocomposite samples for use in electrical energy storage, solid-polymer electrolytes, and food packaging industry.

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Synthesis, Structural, and Optical Properties of Modified Poly(vinyl Chloride) Thin Films by Ethylenediamine Loaded with Metal Oxide Nanoparticles

Abed,

Rashad,

Hayawi Rahman

et al. 2024

ChemistrySelect

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Poly (vinyl chloride) (PVC) films modified with ethylenediamine (en) and doped by nanoparticles (TiO2, ZnO, NiO, and MgO). A mixture of 0.5 g PVC/en dissolved in THF and 0.01 wt % of nanoparticles were used in doping PVC to produce the nanocomposite films. All modified PVC films were characterized by different analysis techniques such as Fourier Transform Infrared (FTIR), Nuclear Magnetic Resonance Spectrometer (NMR), diffusive reflectance spectroscopy (DRS), X‐ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The DRS was used to analyse the scattered IR energy of the samples at wavelengths between (250–1350 nm). The optical properties and oscillator strength were also studied, the transmittance and reflectance values declined for the PVC films, and the absorption coefficient was observed between (79–89 %). The direct energy gap decreased from 4.6 to 1.9, and the indirect energy gap reduced from 4.3 to 1.9. The XRD exhibited a semi‐crystalline structure and the SEM test exhibited a porous structure of all samples. The Urbach energy was increased from 0.8772 eV to 14.712 eV, single oscillator energy ( ) was also increased from 6.38 eV to 13.69 eV and the dispersion energy increased from 23.40 eV to 70.63 eV. Moreover, the surface roughness parameters Ra and Rq of the PVC films in modified and doping were increased from 3.86 nm to 8.14 nm, and 5.08 nm to 10.10 nm respectively. So, PVC results show increased optical properties after modification with en and doping by NPs are used in the light conversion and aerospace industries.

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Structural, optical and electrical studies of chitosan/polyacrylamide blend filled with synthesized selenium nanoparticles

Cited by 30 publications

References 34 publications

Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Elucidation of the effect of hybrid copper/selenium nanofiller on the optical, thermal, electrical, mechanical properties and antibacterial activity of polyvinyl alcohol/carboxymethyl cellulose blend

Synthesis, Structural, and Optical Properties of Modified Poly(vinyl Chloride) Thin Films by Ethylenediamine Loaded with Metal Oxide Nanoparticles

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