Enhanced understanding of organic solvent transportation in NR-NBR blend reinforced with ferrite nanoparticles: A Comprehensive Investigation DOI Creative Commons

S. Hema,

S. Gayathri,

D. A. Anagha

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 22, 2023

Abstract The research paper examines the transport of three regularly used laboratory organic solvents with varying solubility parameter values over a polymer blend nanocomposite membrane generated by two-roll milling. employed (hexane, toluene, and ethanol) have parameters. study aimed to determine how affects diffusion parameters in NR/NBR blends. indicated that incorporating magnetically active ferrite material decreased solvent absorption, diffusion, sorption, permeation constants at lower loading. method nanocomposites was discovered be unusual. Different significantly impact qualities. Morphological analysis data supports relationship between content other characteristics. analysed influence ratio, size molecule, loading on aromatic aliphatic within blended systems. Including fillers' reduced swelling coefficient values, indicating blocked channel into matrix. Lower filler improved reinforcement, as validated cross-link density mechanical Data develop mathematical models predict behaviour understand physical process membranes.

Language: Английский

Formulation and evaluation of PVA-based composite hydrogels: physicochemical, leachables, and in vitro immunogenicity studies DOI Creative Commons
Achmad Himawan, Anna Korelidou,

Ana M. Pérez‐Moreno

et al.

Journal of Materials Chemistry B, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This study explores the formulation and characterization of poly(vinyl alcohol) (PVA)-based composite hydrogels synthesized through solid-state crosslinking. Comprehensive assessments were conducted on their physicochemical properties, leachables, immunogenicity. Swelling experiments demonstrated that incorporation poly(vinylpyrrolidone) (PVP) enhanced water retention, while chitosan had a minimal effect swelling behavior. Qualitative analysis leachables identified water-soluble components, including dehydrated PVA PVP. Fourier-transform infrared (FTIR) spectroscopy confirmed formation ester bonds indicated increased hydrogen bonding post-crosslinking. Thermal stability was validated by differential scanning calorimetry (DSC) thermogravimetric (TGA), with decomposition observed at 320-330 °C. X-ray diffraction (XRD) revealed crystallinity following Solid-state nuclear magnetic resonance (NMR) further chemical changes consistent results from other techniques. In vitro assays using DC2.4 mouse dendritic cells showed hydrogel extracts inhibited cell proliferation without causing cytotoxicity or triggering significant immune responses. These findings highlight hydrogels' biocompatibility stability, supporting potential for biomedical applications.

Language: Английский

Citations

4
Integrating the structural, optical, magnetic, electrical, and dielectric properties of PAM/PEO/NiCo2O4 nanocomposites for opto-magnetic and energy storage applications DOI
Haifa Mohammed Alghamdi, A. Rajeh

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

3
Incorporating hybrid Ag/Co2O3 nanofillers into PVP/CS blends for multifunctional optoelectronic and nanodielectric applications DOI Open Access

H.M. Ragab,

Nabih Diab,

Azza Khaled

et al.

Ceramics International, Journal Year: 2023, Volume and Issue: 50(1), P. 1254 - 1262

Published: Oct. 21, 2023

Language: Английский

Citations

31
Effect of (Co and Zn) doping on structural, characterization and the heavy metal removal efficiency of CuFe2O4 nanoparticles DOI Creative Commons

Rania Ramadan,

Mai M. El-Masry

Journal of the Australian Ceramic Society, Journal Year: 2023, Volume and Issue: 60(2), P. 509 - 524

Published: Aug. 23, 2023

Abstract Nanomaterials, especially ferrites, have various applications in mechanical, electrical, and optical fields. However, their abilities environmental remain unexplored. In this work, the flash auto-combustion method has been used to prepare three different compositions of CuFe 2 O 4 , Zn-CuFe Co-CuFe nanocomposite. The structure, spectroscopic, surface, morphological properties prepared samples were characterized using XRD, FTIR, BET, HRTEM, respectively. According XRD analysis, ferrites consist nanocrystalline particles with sizes 24.5, 37.5, 32.6 for Zn-CuFe2O4, Co-CuFe2O4, had a single cubic phase, while tetragonal phase was formed . addition cobalt zinc copper ferrite increased crystallite size lattice parameters. absorption band FTIR spectra, which represents stretching vibrations along [MetalO] bond at octahedral (B) position, nearly constant (412 Cm −1 ) by Zn CuFe2O4. surface area quantity gas adsorbed on Co-CuFe2O4 highest. greatest force constants [(Ko = 1.37 & KT 1.32 105 dyne/cm] detected Co-CuFe2O exhibited highest saturation magnetization as well magnetocrystalline anisotropy. From FESM, homogeneous distribution, is confirmed appropriate synthesis method. nanonanosamples an average particle 79 nm, 66 56 nm sample doping Cu Co Zn. All tested heavy metal (Cr 6+ removal from water; they demonstrated promising results after optimizing experimental conditions pH 7 contact time 50 min, these values reached 54%, 90%, 93% nanocomposite,

Language: Английский

Citations

18
Mg2+ ion conducting Chitosan:PVP polymer blend electrolytes for electric double layer capacitor applications DOI

C. Naveen,

M. Muthuvinayagam,

Khalid A. Alrashidi

et al.

Materials Science and Engineering B, Journal Year: 2024, Volume and Issue: 308, P. 117595 - 117595

Published: July 27, 2024

Language: Английский

Citations

7
The Influence of Zn Doping on the Cation Distribution and Antibacterial Activity of CoFe2O4 DOI Creative Commons
Amira S. Shafaay,

Rania Ramadan

Journal of Superconductivity and Novel Magnetism, Journal Year: 2023, Volume and Issue: 36(5), P. 1465 - 1480

Published: May 1, 2023

Abstract Nanoparticles of formula Co 1- x Zn Fe 2 O 4 ( = 0.0, 0.3, and 0.5) were prepared successfully using a citrate-auto-combustion method. This work studies the substitution effect 2+ ion on physical, chemical, structural properties CoFe . The structure samples was determined via X-ray diffraction (XRD) Fourier transformed infrared spectrometer (FTIR). investigated ensures that all crystallite into single structure. There is variation size with change in concentration as it observed increased from 16.01 to 30.56 nm by increasing concentration. transform spectra (FTIR) range (390:4000) Cm −1 used for studying elastic spinel ferrites. It that, concentration, moduli increased. morphological surface study calcined scanning electron microscopy (SEM) Gwyddion 2.45 software respectively. roughness average R ) 35.20 at 0 46.6 0.5. At room temperature, magnetic behavior studied studied. maximum saturation magnetization 67.611emu/gm related 0.7 0.3 while highest value exchange bias (H EB 2.15 Oe 0.5 antibacterial activity , tested against Escherichia coli Staphylococcus aureus bacteria. inhibition zone values 8 7.5 mm E. S. respectively, these Generally, results exhibit high possible ferrites applications.

Language: Английский

Citations

16
Spherical SiO2 growth on LaFeO3 perovskite to create core–shell structures for Cd(II) adsorption on its surface DOI Creative Commons
M. M. Arman,

Rania Ramadan

Journal of Materials Science Materials in Electronics, Journal Year: 2023, Volume and Issue: 34(17)

Published: June 1, 2023

Abstract In this study, LaFeO 3 perovskite is synthesized by the flash method, and then a simple method developed for growing SiO 2 on its surface to construct core/shell nanocomposite. The thickness of shell controlled varying amount tetra-ethyl orthosilicate (TEOS). Two @SiO samples with thicknesses were synthesized. Herein, lattice parameters, morphology, magnetic, adsorption properties investigated nanocomposites are tuned changing content . Results confirm that when increased, prepared nanocomposite showed good performance, removal efficiency enhanced from 50 60% , respectively. It thought enhancement performance related high porosity amorphous nature

Language: Английский

Citations

12
Instantaneous and Continuous Preparation of Avermectin Nanoparticles with High Gravity Anti-Solvent Precipitation Technology DOI

Yanjun Dong,

Jun Lu,

Meng Qiao

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(4), P. 1729 - 1739

Published: Jan. 19, 2024

The inherent insolubility of avermectin (Av) in water and its easy degradation property prompt the abuse organic solvents, leading to a decreased rate pesticide utilization natural damage. Herein, we propose an effective approach continuously synthesize nanoparticles (nano Av) with relatively small size enhanced performance by high gravity anti-solvent precipitation rotating packed bed (RPB). Compared conventional stirred tank reactor (STR) method, average particle as-prepared products can be from 166 66 nm. Importantly, preparation time greatly reduced 60 min 1 s. addition polyvinylpyrrolidone (PVP) effectively avoids agglomeration electrostatic steric stabilization, thereby obtaining spherical well-dispersed nano Av. Remarkably, Av prepared RPB exhibits higher drug loading capacity better anti-UV wettability than STR products. technical avermectin, using shows prolonged efficacy displays killing effect for Plutella xylostella. biosafety evaluations on nontarget organisms indicate that PVP is safe Escherichia coli, seeds, plants. This novel method could provide platform development nanopesticides potential applications.

Language: Английский

Citations

5
Efficient lead removal from aquatic solution by (Co0.7Zn0.3)0.9Ni0.1Fe2O4 ferrite with tunable optical and magnetic properties. DOI

Rania Ramadan,

Amira S. Shafaay

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 54, P. 103958 - 103958

Published: June 26, 2023

Language: Английский

Citations

10
Zinc-doped hexaferrite exhibits altered physical properties in the presence of both Dy and Zn ions DOI Creative Commons

Rania Ramadan

Journal of Materials Science Materials in Electronics, Journal Year: 2024, Volume and Issue: 35(20)

Published: July 1, 2024

Abstract The nanosized M-type hexaferrites SrFe 11.5 Zn 0.5 O 19 , Sr 0.95 Dy 0.05 Fe 12 and were produced by auto combustion utilizing citric acid. impacts of substituting 2+ as well 3+ ions upon the structural, electrical, magnetic, optical properties nanoferrites have been studied using XRD, FTIR, UV–Visible, FESEM, VSM, LCR meter. formation a single-phase lattice was confirmed XRD analyses. For investigated samples, crystallite size rose from 36 nm for to 37 33 nm, respectively. In FTIR spectra, couple absorption bands seen. prepared samples possess strong tendency clump together into large masses, according FSEM. samples’ band gap values vary 1.8 2.4 eV. Additionally, dielectric parameters based on Maxwell–Wagner two-layer approach also described. results reveal that constant (ε’) loss (ε’’) decrease with increasing applied field frequency, whereas AC conductivity (σac) increases. VSM show all materials are referred hard magnetic materials.

Language: Английский

Citations

4