A new sol–gel synthesis of 45S5 bioactive glass using an organic acid as catalyst

Fauré, J.; Drevet, Richard; Lemelle, A.; Jaber, Nader Ben; Tara, A.; Btaouri, Hassan El; Benhayoune, Hicham

doi:10.1016/j.msec.2014.11.045

Cited by 89 publications

(51 citation statements)

References 34 publications

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“…On the other hand, the gelderived materials exhibit a diffraction pattern characteristic for a glass-ceramic structure. This observation is typical for the bioactive glasses synthesized using the sol-gel process [18]. In both materials, silicate and phosphate crystalline phases were detected.…”

Section: Xrd Analysissupporting

confidence: 65%

See 1 more Smart Citation

Structural variations of bioactive glasses obtained by different synthesis routes

Dziadek

Zagrajczuk

Jeleń

et al. 2016

Ceramics International

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Section: Xrd Analysissupporting

confidence: 65%

“…Moreover, the band at around 620 cm -1 is associated in the literature to the presence of cristobalite phase [12,37], however our XRD analysis did not detect it. Above-mentioned bands were observed after the heat treatment of amorphous melt-quenched 45S5 bioglass [23,34,36] and also of gel-derived 45S5 glasses [18,19].…”

Section: Si-o and O-p-o Bondsmentioning

confidence: 91%

Structural variations of bioactive glasses obtained by different synthesis routes

Dziadek

Zagrajczuk

Jeleń

et al. 2016

Ceramics International

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“…The 500 and 700°C treated BG/CNT-COOH composites, however, show a pattern similar to that of pristine 700°C BG, which exhibited a nanocrystalline phase within the amorphous matrix. 29,30 Figure 3B shows the SEM image of pure CNT-COOH that are~10 to 50 lm in length, with diameters ranging from 10 to 18 nm. BG/CNT-COOH composites treated at 900°C exhibited distinct diffraction peaks.…”

Section: Resultsmentioning

confidence: 99%

Characterization of bioactive glass‐coated carbon nanotubes prepared by solgel process

Fan

Chang

Lin

et al. 2016

Int J of Appl Glass Sci

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Due to its excellent bioactivity, bioactive glass (BG) is suitable for use as bone graft substitutes in biomedical applications. In this study, carbon nanotubes (CNT‐COOH) served as templates for depositing bioactive glass based on 60SiO2–36CaO–4P2O5 wt.% were synthesized via the solgel process. The BG and BG/CNT‐COOH composites were treated at 300, 500, 700, and 900°C; their properties were also examined by X‐ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The experimental results showed that BG/CNT‐COOH composites treated at 500 and 700°C were amorphous and contained silicate nanocrystals. By altering precursor concentration, bioactive glass of various thicknesses was successfully solgel coated on CNT‐COOH. Immersion of the BG/CNT‐COOH composites in simulated body fluid solution and MG‐63 cell culture assessment showed the 500°C treated BG/CNT‐COOH exhibits excellent bioactivity.

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“…As described in the preceding paragraphs, Faure et al, made a good contribution using organic acid as catalyst to minimize the inorganic acid concentration in the final product. Nevertheless, the problem remained unsolved, since they obtained a highly crystallized glass‐ceramic.…”

Section: Introductionmentioning

confidence: 99%

Effects of catalysts on polymerization and microstructure of sol‐gel derived bioglasses

et al. 2018

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This work investigates the effects of the type and concentration of acid catalysts on the microstructural features of silica‐rich bioactive glasses (75Si–16Ca–5Na–4P, in mol%) synthesized from acetate and nitrate precursor salts, using an innovative rapid sol‐gel method, followed by thermal stabilization at 550°C. The results of XRD, SEM, Fourier Transform Infrared Spectrometer (FTIR) and solid state MAS NMR analysis revealed that the lower degrees of polymerization and network connectivity were found for bioglass powders obtained in the presence of high acid concentrations. A low amount of citric acid gave a polymerization degree similar to that obtained in the absence of any catalyst, but the synthesis time was as short as that found for high acid concentrations. The XRD and FTIR results demonstrated amorphous glass powders free of any nitrate by‐products. The microstructure and degree of polymerization could be modified by changing the type and concentration of acid catalyst, enabling one to tailor the bioactivity of glasses even without changing the starting composition.

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A new sol–gel synthesis of 45S5 bioactive glass using an organic acid as catalyst

Cited by 89 publications

References 34 publications

Structural variations of bioactive glasses obtained by different synthesis routes

Structural variations of bioactive glasses obtained by different synthesis routes

Characterization of bioactive glass‐coated carbon nanotubes prepared by solgel process

Effects of catalysts on polymerization and microstructure of sol‐gel derived bioglasses

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