Improved toughness, electrical conductivity and optical properties of bioactive borosilicate glasses for orthopedic applications

Alatawi, Ayshah; Alturki, Asma M.; Soliman, Ghareb M.; Abulyazied, Dalia E.; Taha, Mohammed A.; Youness, Rasha A.

doi:10.1007/s00339-021-05116-1

Cited by 17 publications

(4 citation statements)

References 54 publications

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“…The Lame's constants (i.e. λ and μ) were calculated using V L , V S and bulk density (ρ) of the sintered specimens according to the formula: 33,34…”

Section: Methodsmentioning

confidence: 99%

Influence of Nano-Hybrid Reinforcements on the Improvement Strength, Thermal Expansion and Wear Properties of Cu–SiC–Fly Ash Nanocomposites Prepared by Powder Metallurgy

Taha¹,

El-zaidia²,

Zaki³

et al. 2023

ECS J. Solid State Sci. Technol.

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In this study, Cu-matrix hybrid nanocomposites with varying amounts of silicon carbide (SiC) and fly ash nano particles were created using the powder metallurgy process. To describe the microstructure of produced powders, X-ray diffraction (XRD) technique and transmission electron microscopy (TEM) were used. The powders were compressed and fired for one hour in inert gas at three different temperatures up to 850 °C. Moreover, the sintered samples’ microstructure, mechanical, wear, thermal, and electrical characteristics were examined. According to the results, particle sizes were successfully decreased up to 51.2 nm by adding SiC and fly ash ceramics. The values of density, coefficient thermal expansion (CTE) and electrical conductivity of the nanocomposite sample containing 16 vol% of ceramics decreased until reached 92.3%, 9.5 × 10−6/°C and 7.44 × 106 S m−1, respectively. Additionally, as compared to Cu matrix (CSF0), the nanocomposite with the highest ceramics volume percentage (CSF8) significantly improved in terms of ultimate strength, microhardness, Young’s modulus, and wear rate by 47.8, 88, 23.5and 27.3%, respectively.

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“…The Lame's constants (i.e. λ and μ) were calculated using V L , V S and bulk density (ρ) of the sintered specimens according to the formula: 33,34…”

Section: Methodsmentioning

confidence: 99%

Influence of Nano-Hybrid Reinforcements on the Improvement Strength, Thermal Expansion and Wear Properties of Cu–SiC–Fly Ash Nanocomposites Prepared by Powder Metallurgy

Taha¹,

El-zaidia²,

Zaki³

et al. 2023

ECS J. Solid State Sci. Technol.

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“…Doping borosilicate glasses with alkali oxides such as Li 2 O improves network compactness and provides moisture resistance. https://www.indjst.org/ Transition metal ions in glasses induce conductivity which is crucial for high energy density solid-state batteries (1)(2)(3)(4) .…”

Section: Introductionmentioning

confidence: 99%

Study of Conduction Mechanisms in Alkali and Transition Metal Oxides Doped Borosilicate Glasses

Dyama,

Sankarappa,

Heerasingh

et al. 2024

IJST

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Objectives: To synthesise a unique set of borosilicate glasses of composition, xLi2O + 0.15SiO2 + 0.45B2O3 + 0.05ZnO + (0.35 – x) WO3; (0.25 ≤ x ≤ 0.34) and to investigate conduction mechanisms. Methods: Glasses were synthesized by melt quenching technique. From the XRD spectra samples were conformed to be non-crystalline in nature. Density has been measured by following Archimedes principle and is found to decrease with Li2O mole fractions in the range 2.900 gm/cm3 – 2.495 gm/cm3. DC-conductivity was measured for the temperature range 303K – 525 K using two probe technique. Findings: It was found that these glasses behave like semiconductors in terms conductivity variation with temperature. Conductivity decreased with Li2O content up to 0.33 mole fractions and increases for higher mole fractions. High temperature conductivity variation i.e., above ϴD/2 (ϴD = Debye’s temperature) is found to follow the Mott’s small polaron hopping (SPH) model. Activation energy for conduction above ϴD/2 is found to be in the range 0.282 eV-0.702 eV. Decrease of conductivity and activation energy with increase of Li2O content has been explained in terms of dynamic nature of network and formation of cation-polaron neutral entities. The conductivity below ϴD/2 has been found to follow Mott’s variable range hopping (VRH) models. The density of states at Fermi level derived from Mott’s VRH are found to be of the order of 1023 eV-1cm-3 which are in close agreement with reported ranges for transition metal oxides doped glasses. Novelty: A unique set of mixed conducting borosilicate glasses have been prepared and investigated thoroughly for conduction mechanisms. Keywords: Borosilicate glasses, Density, Conductivity, Activation energy, Density of states

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“…One of the main operational treatments for skin wound regeneration is to enhance angiogenesis through the healing progression [6][7][8][9]. Likewise, discovering a bio-scaffold that performs as a natural extracellular matrix has proven important [10]. Over the latest decade, there has been remarkable progress in nano-biomaterials usage in the tissue engineering medical sector.…”

Section: Introductionmentioning

confidence: 99%

Magnesium Ortho-Vanadate/Magnesium Oxide/Graphene Oxide Embedded through Cellulose Acetate-Based Films for Wound Healing Applications

et al. 2023

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A multifunctional nano-films of cellulose acetate (CA)/magnesium ortho-vanadate (MOV)/magnesium oxide/graphene oxide wound coverage was fabricated. Through fabrication, different weights of the previously mentioned ingredients were selected to receive a certain morphological appearance. The composition was confirmed by XRD, FTIR, and EDX techniques. SEM micrograph of Mg3(VO4)2/MgO/GO@CA film depicted that there was a porous surface with flattened rounded MgO grains with an average size of 0.31 µm was observed. Regarding wettability, the binary composition of Mg3(VO4)2@CA occupied the lowest contact angle of 30.15 ± 0.8o, while pure CA represents the highest one at 47.35 ± 0.4°. The cell viability % amongst the usage of 4.9 µg/mL of Mg3(VO4)2/MgO/GO@CA is 95.77 ± 3.2%, while 2.4 µg/mL showed 101.54 ± 2.9%. The higher concentration of 5000 µg/mL exhibited a viability of 19.23%. According to optical results, the refractive index jumped from 1.73 for CA to 1.81 for Mg3(VO4)2/MgO/GO@CA film. The thermogravimetric analysis showed three main stages of degradation. The initial temperature started from room temperature to 289 °C with a weight loss of 13%. On the other hand, the second stage started from the final temperature of the first stage and end at 375 °C with a weight loss of 52%. Finally, the last stage was from 375 to 472 °C with 19% weight loss. The obtained results, such as high hydrophilic behavior, high cell viability, surface roughness, and porosity due to the addition of nanoparticles to the CA membrane, all played a significant role in enhancing the biocompatibility and biological activity of the CA membrane. The enhancements in the CA membrane suggest that it can be utilized in drug delivery and wound healing applications.

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Improved toughness, electrical conductivity and optical properties of bioactive borosilicate glasses for orthopedic applications

Cited by 17 publications

References 54 publications

Influence of Nano-Hybrid Reinforcements on the Improvement Strength, Thermal Expansion and Wear Properties of Cu–SiC–Fly Ash Nanocomposites Prepared by Powder Metallurgy

Influence of Nano-Hybrid Reinforcements on the Improvement Strength, Thermal Expansion and Wear Properties of Cu–SiC–Fly Ash Nanocomposites Prepared by Powder Metallurgy

Study of Conduction Mechanisms in Alkali and Transition Metal Oxides Doped Borosilicate Glasses

Magnesium Ortho-Vanadate/Magnesium Oxide/Graphene Oxide Embedded through Cellulose Acetate-Based Films for Wound Healing Applications

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