Bioactive glass 58S prepared using an innovation sol-gel process

Abstract

A 58S bioglass with a composition in the ternary system 58SiO 2 -33CaO-9P 2 O 5 (wt.%) was prepared by an innovation sol-gel process in which a small amount of ammonia was used to facilitate the condensation reactions within an acidic solution prepared by tetraethyl orthosilicate, triethyl phosphate and calcium nitrate tetrahydrate. The properties of synthetic glass were investigated by several techniques. The amorphous nature and high specific surface area (99.1 m 2 /g) of the obtained glass were confirmed by using X-ray diffraction and low-temperature nitrogen adsorption techniques, respectively. In vitro experiments were performed by soaking glass samples in the simulated body fluid (SBF). The XRD patterns and SEM images confirmed the bioactivity of the synthesized bioglass by formation of a dense and visible hydroxyapatite layer on its surface after 2 days of in vitro assays. The ICP-OES data illustrated the ion exchange behaviours between the bioglass 58S and the SBF solution.

Synthesis and Characterization of a Highly Ordered Mesoporous Bio-glass

“…The BJH analysis showed the pore size distribution of the synthetic bioglass centered at 6.5 nm as seen in Figure 2. The specific surface area (SBET) and pore volume value (Vp) of the synthetic bio-glass were 395.6 (m 2 /g) and 0.52 (cm 2 /g), which are significantly higher than those achieved for conventional solgel bio-glasses of similar compositions [9,10,13].…”

“…The chemical precursors were originally calculated to synthesize 2 grams of bio-glass material. Based on the scientific references [11][12][13], the synthetic processing is briefly described as follows. The mixture of calculated amounts of TEOS and TEP in distilled water was stirred for 30 minutes with the stirring speed of 100 rpm.…”

Investigation of Bioactive Glass-Ceramic 60SiO2-30CaO-10P2O5 Prepared by Hydrothermal Method

“…Figure 2 shows the FTIR spectra of the BGC-150 and BGC-220. For the BGC-150 sample, a majority of characteristic bands of the silica network were determined according to the previous investigations [10,14,15]. e band at 470 cm − 1 is attributed to the Si-O-Si bending vibration, while two bands at 811 and 1101 cm − 1 correspond to Si-O-Si symmetric stretching and Si-O-Si asymmetric stretching, respectively.…”

“…e pH and Si, Ca, and P concentrations are related to the dissolution of BGC samples and then the mineralization of new apatite crystals on the surface of biomaterials [3,14]. e pH was measured by using a pH meter, while the concentrations of Si, Ca, and P in the SBF solution were identified by the ICP-OES (Figure 8).…”

Bioactive Glass Coated Zirconia for Dental Implants: a review

“…Therefore, the sol-gel bioglass exchange surface can be more important than the exchange surface of the produced bioglass by the melting method. In a study performed by Bui et al [101], 58S-BG was prepared via a novel sol-gel technique. In this new approach, a quick transformation process of sol to gel, was conducted by the addition of ammonia solu- observed by micro-computed tomography in study conducted by Baino et al [114].…”