Preparation of nanocrystalline forsterite by combustion of different fuels and their comparative in-vitro bioactivity, dissolution behaviour and antibacterial studies

Choudhary, Rajan; Manohar, Prasanth; Vecstaudža, Jana; Yáñez‐Gascón, María J.; Pérez‐Sánchez, Horacio; Nachimuthu, Ramesh; Ločs, Jānis; Swamiappan, Sasikumar

doi:10.1016/j.msec.2017.03.308

Cited by 40 publications

(31 citation statements)

References 66 publications

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“…Figure (a) and (b) indicated the XRD pattern of enstatite and forsterite respectively prepared via combustion route.The presence of cristobalite and periclase (SiO 2 & MgO) were identified as major phases after combustion at 400 °C as per the previous findings . When the temperature was subsequently increased, SiO 2 and MgO phases react with each other stoichiometrically to produce enstatite and forsterite phases.The XRD pattern of enstatite and forsterite calcined at 1000 °C for 12 h and 900 °C for 6 hmatches with standard JCPDS cards: 96–900‐6340 and 96–900‐0320, respectively.…”

Section: Resultssupporting

confidence: 72%

Synthesis, Bioactivity and Mechanical Stability of Mg/Ca Silicate Biocomposites Developed for Tissue Engineering Applications

Venkatraman

Swamiappan

2019

ChemistrySelect

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Bioceramics used in hard tissue engineering applications should primarily meet the criteria of mechanical strength and apatite mineralisation of natural bone. In such a scenario, designing of bioceramic composites is inevitable as calcium silicates possess good apatite deposition ability and magnesium silicates show excellent mechanical stability. The present study investigates the influence of calcium (Ca) and magnesium (Mg) ions of the bioceramics on bioactivity and mechanical strength. Binary silicates such as wollastonite (CaSiO3), enstatite (MgSiO3) and forsterite (Mg2SiO4) were prepared by sol‐gel combustion technique. Functional group identification and phase formation of the silicate materials were analysed by FT‐IR and X‐ray diffraction studies respectively. Furthermore, apatite mineralisation ability and mechanical strength of wollastonite were evaluated. Influence of wollastonite on the bioactivity of both enstatite and forsterite was also investigated. The obtained results conferred that the wollastonite possesses good apatite formation ability, moderate resorbability and low mechanical strength. The composites of wollastonite show improvement in the enstatite with respect to bioactivity and in forsterite with respect to superior mechanical properties.

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Section: Resultssupporting

confidence: 72%

Synthesis, Bioactivity and Mechanical Stability of Mg/Ca Silicate Biocomposites Developed for Tissue Engineering Applications

Venkatraman

Swamiappan

2019

ChemistrySelect

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“…A study using the agar gel diffusion method and forsterite revealed an inhibitory effect against the tested bacteria. The induced effect was more intense for S. aureus, compared to E. coli, noting that forsterite can be used to cover the surface of implants or as a bactericidal bioceramic to prevent bacterial infections, inhibiting biofilm formation [23].…”

Section: Agnps Characterizationmentioning

confidence: 99%

In-vitro Antibacterial Activity of Novel Nanostructured Composites Based on Forsterite and Silver Nanoparticles

Avram¹,

Gorea²,

Răpuntean³

et al. 2020

Rev. Chim.

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There is a continuous need for discovering new nanomaterials with antibacterial activity against various pathogens, like Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). This study was performed to assess the antimicrobial activity of two novel nanostructured forsterites, both in the absence and the presence of silver nanoparticles (AgNPs). The two nano forsterites (FS) were prepared by advanced sol-gel (FSsg) and precipitation (FSpp) methods. Preparation of colloidal AgNPs systems was realized by using the precursor, AgNO3, and the trisodium citrate and tanic acid assuring the formation and stabilization of AgNPs. The characterization of nano forsterite powders was carried out using complementary physical methods: XRD, SEM, and AFM. The AgNPs were characterized by UV-Vis spectra, STEM and AFM imaging. The antimicrobial activity was studied by the agar well diffusion method both in the FS native state, as FSsg and FSpp, and in their mixture with silver nanoparticles (AgNPs). The inhibitory effect of synthesized forsterites, FSsg and FSpp, particularly variants with AgNPs was found only on the S. aureus strain, the zones of inhibition being between 8 and 10 mm, and more intensely expressed in the FSpp-AgNPs dispersions. These findings open new orthopedic applications of these systems, particularly for antimicrobial coated metallic implants.

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“…The detailed procedure followed for the preparation of wollastonite and forsterite is described elsewhere [11,12]. Different ratios of pure wollastonite and forsterite were finely ground using an agate mortar and pestle.…”

Section: Preparation Of Bioceramicsmentioning

confidence: 99%

Wollastonite/forsterite composite scaffolds offer better surface for hydroxyapatite formation

Lakshmi¹,

Choudhary

Ponnamma

et al. 2019

Bull Mater Sci

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The present work deals with a comparative study of ceramic/ceramic composites for the development of scaffolds for biomedical applications. Wollastonite and forsterite were synthesized by a sol-gel combustion method. The influence of constituents and composition on apatite deposition was studied by fabricating wollastonite/forsterite composites. The X-ray diffraction pattern explains the bone like-apatite deposition within early stages of immersion. The atomic force microscopy micrographs revealed that with an increase in wollastonite content in the composites the roughness was enhanced. Dissolution studies further confirmed the rapid consumption of Ca and P ions from the simulated body fluid. Hence, apatite formation was observed to be more on the surface of a composite containing a higher amount of wollastonite. The results suggest that composites have more influence on the biomineralization activity when compared with pure bioceramics.

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Preparation of nanocrystalline forsterite by combustion of different fuels and their comparative in-vitro bioactivity, dissolution behaviour and antibacterial studies

Cited by 40 publications

References 66 publications

Synthesis, Bioactivity and Mechanical Stability of Mg/Ca Silicate Biocomposites Developed for Tissue Engineering Applications

Synthesis, Bioactivity and Mechanical Stability of Mg/Ca Silicate Biocomposites Developed for Tissue Engineering Applications

In-vitro Antibacterial Activity of Novel Nanostructured Composites Based on Forsterite and Silver Nanoparticles

Wollastonite/forsterite composite scaffolds offer better surface for hydroxyapatite formation

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