Sol–gel synthesis and crystallisation of 3CaO·2SiO2 glassy powders

Laudisio, G.; Branda, F.

doi:10.1016/s0040-6031(00)00786-3

Cited by 27 publications

(28 citation statements)

References 7 publications

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“…However, as shown in Figure 4, for the ternary film (Figure 4c) heat treated at 400 °C for 15 minutes, one can observe the absence of relative absorption bands due to the nitrate groups (~1408-1342 cm -1 ). These peaks are still present, but only on the binary film (Figure 4b), suggesting that the heat treatment of the films at 400 °C for at least 15 minutes leds to the decomposition of the nitrate residue on the film surface 24,37,38 . When calcium nitrate is decomposed by heat treatment at 400 °C for 15 minutes, calcium ions remain present in the silica network, as illustrated in Figure 5.…”

Section: Methodsmentioning

confidence: 99%

Sol-Gel SiO2-CaO-P2O5 biofilm with surface engineered for medical application

et al. 2007

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Sol-gel film in the SiO 2 -CaO-P 2 O 5 system was prepared from TEOS, TEP, alcohol and hydrated calcium nitrate in an acidic medium. The coatings were deposited on stainless steel using the dip-coating technique. After deposition, the composite was submitted to heat treatment, at different temperatures and exposure times to investigate the influence of such parameters on the surface morphology of the composite. The coated surfaces were characterized by AFM, SEM and FTIR. The present study showed that the formation of different textures (an important parameter in implant fixation) could be controlled by temperature and time of heat treatment.

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Section: Methodsmentioning

confidence: 99%

Sol-Gel SiO2-CaO-P2O5 biofilm with surface engineered for medical application

et al. 2007

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“…) of the FTIR spectrum, 23,24 the peak at 800 cm À1 that can be attributed to the symmetric stretching mode of Si-O bonds has been previously connected with the formation of a Caolivine phase. 23,24 Morphological characterization.…”

mentioning

confidence: 87%

“…23,24 Morphological characterization. The morphology and structure of the fabricated sol-gel scaffolds are illustrated in Figure 2(i).…”

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confidence: 99%

Sol–gel processing of novel bioactive Mg-containing silicate scaffolds for alveolar bone regeneration

et al. 2015

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Periodontal tissue regeneration is an important application area of biomaterials, given the large proportion of the population affected by periodontal diseases like periodontitis. The aim of this study was the synthesis of a novel porous bioceramic scaffold in the SiO 2 -CaO-MgO system with specific properties targeted for alveolar bone tissue regeneration using a modification of the traditional foam replica technique. Since bioceramic scaffolds are considered brittle, scaffolds were also coated with gelatin in order to increase their mechanical stability. Gelatin was chosen for its biocompatibility, biodegradability, low-cost, and low immunogenicity. However, gelatin degrades very fast in water solutions. For this reason, two different cross-linking agents were evaluated. Genipin, a non-toxic gardenia extract and the chemical compound 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) in combination with N-hydroxysuccinimide (NHS), which is also considered non-toxic. The results of the investigation indicated that all scaffolds presented an open, interconnected porosity and pores' sizes in the range of 300-600 lm, fast apatite-forming ability, biocompatibility, and suitable mechanical stability.

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“…However, XRD patterns of 50S20Mg heated at the same temperatures were inconsistent with the FTIR findings, since they all indicated the formation of dicalcium silicate (Ca 2 SiO 4 , ICDD card 70-2450), while the one heated at T 2 presented in addition a small amount of diopside (ICDD card 71-1494). Dicalcium silicate has been previously reported not to present any characteristic bands in the Mid-Infrared (MIR) region (4000-400 cm À 1 ) of the FTIR spectrum [33,34] and this is a possible explanation for the inconsistency of the FTIR and XRD findings at lower temperatures. In the case of 50S20Mg heated at T 3 the FTIR spectrum presented distinct bands at the spectral areas of 600-700 cm À 1 and 850-1100 cm À 1 , which can be attributed to diopside and akermanite (Ca 2 MgSi 2 O 7 ), as illustrated in Fig.…”

Section: Structural Characterization Before and After Sinteringmentioning

confidence: 99%