Article
Materials Science, Multidisciplinary
M. Mostafa, B. I. Salem
Summary: A series of (Co0.2 Zn0.8-xCdxFe2O4) nanoparticles were synthesized by flash auto combustion method. The structural and morphological properties were characterized using XRD, FTIR, and SEM analysis. The results showed that Cd doping influenced the crystal growth and caused a shift in the FTIR analysis peak towards lower wavenumber. Additionally, the samples exhibited soft magnetic behavior based on the magnetic measurement.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Ceramics
N. K. Wally, E. Sheha, B. M. Kamal, Atif M. Ali, A. M. Ali, M. M. El-Desoky
Summary: This study examined the dielectric properties of Na2S - V2O5- P2O5 glass with different treatment durations and found that the 12-hour glass-ceramic nanocomposite exhibited the highest conductivity. The activation energies for conductivity and relaxation processes were obtained, and the stretched exponent was estimated to indicate a non-Debye type relaxation process.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
A. A. Al-Muntaser, Eman Alzahrani, Hala M. Abo-Dief, Abdu Saeed, Eida M. Alshammari, Amani M. Al-Harthi, A. E. Tarabiah
Summary: Nanocomposite films filled with different concentrations of zinc oxide nanoparticles (ZnO NPs) were created using the solution casting technique. The effect of ZnO NPs on the structural, optical, and electrical features of the films made of polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), and carboxymethylcellulose (CMC) was investigated. The results revealed improvements in electrical and optical properties, making these films potential competitors for optoelectronic devices like sensors.
Article
Crystallography
Ahmed N. Al-Hakimi, G. M. Asnag, Fahad Alminderej, Ibrahim A. Alhagri, Sadeq M. Al-Hazmy, Talal F. Qahtan
Summary: New samples of PVA-TiO2/Cu nanocomposites were prepared and examined using various analytical methods. The addition of TiO2/Cu nanoparticles resulted in a decrease in the crystallinity of the PVA structure, improved optical properties, and enhanced thermal stability. The AC conductivity was also improved by incorporating the nanoparticles into the polymer matrix. These findings suggest that the PVA-TiO2/Cu nanocomposites have potential applications in energy storage and rechargeable lithium-ion batteries.
Article
Materials Science, Textiles
Arumugam Kayambu, Rajkumar Ramasubbu
Summary: The study investigates the characterization and properties of Areca Catechu Fiber (ACF), which is rich in cellulose and has a density of 1.34 g/cc, making it a potential replacement for synthetic fibers. With low wax content, it provides better adhesion between fiber and resin interface, making it a better solution for eco-friendly composite products.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Y. Alaoui, M. Laourayed, A. Er-rafai, M. Hammi, M. El Moudane, M. Boudalia, Z. Sekkat, I. Warad, A. Guenbour, A. Bellaouchou, A. Zarrouk
Summary: In this study, six aluminum potassium calcium based-phosphate glasses were synthesized and their structural and chemical properties were investigated. The addition of aluminum was found to have a positive effect on the density, glass transition temperature, and crystallization temperature of the glasses, as well as generating new chemical bonds in the glass structure.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Subir Kumar Patla, Pulak Pal, Aswini Ghosh
Summary: We studied the ion transport and segmental dynamics in solid polymer electrolytes based on poly(ethylene oxide) (PEO) and sodium tetrafluoroborate (NaBF4) salt. The molecular weight of PEO polymer matrix was varied while keeping the salt concentration fixed. The ionic conductivity showed correlation with glass transition temperature, crystallinity, and ion diffusion coefficient. AC conductivity spectra were analyzed using a universal power law model, except for the low frequency region where electrode polarization dominated. The temperature dependence of ionic conductivity and hopping frequency followed the Vogel-Tammann-Fulcher (VTF) relation, indicating coupling between ion transport and polymer chain dynamics. The ion transport in PEO based polymer electrolytes with higher molecular weight was found to be more cooperative.
SOLID STATE IONICS
(2023)
Article
Polymer Science
M. I. Mohammed
Summary: In this study, the effects of ZnO nanoparticles on PMMA/PVDF blend were investigated by using solution-cast technique to prepare nanocomposites. FTIR and SEM studies were conducted to analyze the properties. The results showed that the nanocomposites exhibited high dielectric constant and low dielectric loss, making them suitable for capacitors and memory device applications.
Article
Materials Science, Multidisciplinary
Paramesh Donta
Summary: GaxFe(3-x)O4 solid solutions were synthesized by auto combustion method, and the effects of Ga3+ ion substitution in Fe3O4 on the structural, morphological and dielectric properties were studied. The results show that the substitution of Ga3+ ions leads to a decrease in the AC conductivity of the material, and the dielectric properties and conduction mechanism are related to the Maxwell-Wagner interfacial polarization and ion hopping mechanism.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Multidisciplinary
A. A. Al-Muntaser, Eman Alzahrani, Abdu Saeed, Abdullah F. Al Naim, Hala M. Abo-Dief, Safaa Y. Qusti, A. E. Tarabiah
Summary: This study investigates the impact of titanium oxide (TiO2) nanoparticles (NPs) on the structural, optical, and conductive properties of polystyrene (PS) and polyvinyl carbazole (PVK) nanocomposite films. The synthesized TiO2 NPs have sizes between 12 and 32 nm and a tetragonal anatase phase. The filling of PS/PVK blend with TiO2 NPs decreases the nanocomposite crystallinity, changes the absorption peaks of PS and PVK, and decreases the optical energy gaps. The increase of TiO2 NPs concentration in the blend induces the formation of a percolating network and increases the composite's dielectric loss and constant.
Article
Materials Science, Ceramics
Muhammad Shahzad Shifa, Waqar Ahmed Khan, Hind Albalawi, Tahani I. Al- Muhimeed, Abeer A. AlObaid, Q. Mahmood, Muhammad Azhar Khan, Shagufta Gulbadan, Zaheer Abbas Gilani, Imdadullah Qureshi
Summary: M-type hexa-ferrites powders were synthesized using the coprecipitation technique and subjected to heat treatment at different temperatures. The synthesized materials exhibited excellent structural and magnetic properties, showing potential for applications in high-frequency devices.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Textiles
Nadjoua Bellel, Nadir Bellel
Summary: A new composite material based on Portland cement and date palm fiber was studied as a thermal insulation material for exterior coatings of buildings. Analysis techniques including FTIR, XRD, TGA, and SEM were used to study the properties of the composites. The results showed that the addition of date palm fibers did not affect the chemical composition of the matrix, but increased porosity and decreased thermal conductivity, making it a promising thermal insulation material for buildings.
JOURNAL OF ENGINEERED FIBERS AND FABRICS
(2023)
Article
Materials Science, Ceramics
Nagina Bashir, Sonia Zulfiqar, Sana Munir, Mohamed M. Ibrahim, Manal F. Abou Taleb, Salah M. El-Bahy, Muhammad Suleman, Muhammad Shahid
Summary: Sodium doped vanadium pentaoxide (Na.V2O5) nanorods were successfully synthesized through hydrothermal method. The formation of nanorods structure for Na doped V2O5 was confirmed through structural, morphological and optical property studies. The photocatalytic efficiency of the synthesized Na-doped V2O5 samples showed improvement compared to pure V2O5 nanorods, with the Na.V2O5 (5 wt%) exhibiting the highest degradation rate for Rhodamine B dye.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
M. Nandhinilakshmi, D. Vanitha, N. Nallamuthu, M. Anandha Jothi, K. Sundaramahalingam
Summary: Sodium ion-conducting biodegradable corn starch/poly(vinyl pyrrolidone) materials with different wt% of sodium chloride electrolytes were prepared by solution casting technique. The materials exhibited high electrical conductivity and electrochemical stability.
Article
Polymer Science
N. Ali, S. Z. Z. Abidin, S. R. Majid, N. K. Jaafar
Summary: Polymer electrolytes based on agarose and Magnesium Nitrate were prepared with different weight percentages and studied for their electrical properties. The highest ionic conductivity film was achieved by doping 30 wt% Magnesium Nitrate, leading to increased amorphous nature of the polymer and stable electrochemical properties up to 3.57V. Various analytical techniques, including XRD, FTIR, LSV, and CV, were used to study the molecular interactions and performance of the electrolyte.