Porous silicas from mixtures of Na2Si3O7 aqueous solution and TEOS. Influence of sodium silicate amount

Picioruş, Elena-Mirela; Svera, Paula; Ianăși, Cătălin

doi:10.24193/subbchem.2021.01.03

Cited by 1 publication

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“…Here, absorbance maxima corresponding to solely silicon-containing bonds are evidenced at ~1060, ~800, and ~450 cm −1 . It is interesting to note the significant decrease in the intensity of ~950 cm −1 maxima, suggesting both its dual source in the non-calcined SiO 2 /PVA_0h aging sample (vibrations of bridged Si–OH and non-bridged free Si–O– due to higher hydrolysis) and the formation of pure SiO 2 in the calcined SiO 2 _0h aging sample (the sole presence of Si–OH bonds due to increased condensation occurred after calcination) [ 71 , 72 , 73 ]. These results confirm the formation of pure, inorganic silica-based networks.…”

Section: Resultsmentioning

confidence: 99%

Electrospun Fibrous Silica for Bone Tissue Engineering Applications

et al. 2023

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The production of highly porous and three-dimensional (3D) scaffolds with biomimicking abilities has gained extensive attention in recent years for tissue engineering (TE) applications. Considering the attractive and versatile biomedical functionality of silica (SiO2) nanomaterials, we propose herein the development and validation of SiO2-based 3D scaffolds for TE. This is the first report on the development of fibrous silica architectures, using tetraethyl orthosilicate (TEOS) and polyvinyl alcohol (PVA) during the self-assembly electrospinning (ES) processing (a layer of flat fibers must first be created in self-assembly electrospinning before fiber stacks can develop on the fiber mat). The compositional and microstructural characteristics of obtained fibrous materials were evaluated by complementary techniques, in both the pre-ES aging period and post-ES calcination. Then, in vivo evaluation confirmed their possible use as bioactive scaffolds in bone TE.

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Section: Resultsmentioning

confidence: 99%