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Abstract:

Free-standing macroporous bioglass scaffolds were prepared by a sol-gel route. The ice-segregation-induced self-assembly method was employed to structure a bioglass aqueous sol in the form of green monoliths with a well-defined macroporosity. The achieved texture was essentially preserved after a mild annealing at 873 K. The texture can be properly tuned by typical variables such as the freezing rate or sol concentration. In addition to these physical preparative variables, the acidity level plays a key role in preventing the silica condensation, keeping the primary building units in the early stages of the sol-gel transition and allowing the obtainment of large macropores. The chemical homogeneity of the resulting bioglass was enough to ensure a proper in vitro biomineralization response, resulting in a well-distributed hydroxyaopatite-like nanoparticulated layer. © 2011 American Chemical Society.

Registro:

Documento: Artículo
Título:Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying
Autor:Minaberry, Y.; Jobbágy, M.
Filiación:INQUIMAE-DQIAQF, Facultad de Ciencias Exactas y Naturales, Argentina
Centro Interdisciplinario de Nanociencia y Nanotecnología, Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Palabras clave:biomineralization; glasses; porous materials; sol-gel; Bio-glass; Building units; Chemical homogeneity; Freeze drying; Freezing rate; In-vitro; Macro-porosity; Macropores; Macroporous bioglass; Self-assembly method; Silica condensation; Sol concentration; Sol-gel routes; Sol-gel transitions; Acidity; Biomineralization; Gels; Glass; Ocean habitats; Phase transitions; Porous materials; Scaffolds; Silica; Sol-gel process; Sol-gels; Textures; Sols
Año:2011
Volumen:23
Número:9
Página de inicio:2327
Página de fin:2332
DOI: http://dx.doi.org/10.1021/cm103362c
Título revista:Chemistry of Materials
Título revista abreviado:Chem. Mater.
ISSN:08974756
CODEN:CMATE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08974756_v23_n9_p2327_Minaberry

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Citas:

---------- APA ----------
Minaberry, Y. & Jobbágy, M. (2011) . Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying. Chemistry of Materials, 23(9), 2327-2332.
http://dx.doi.org/10.1021/cm103362c
---------- CHICAGO ----------
Minaberry, Y., Jobbágy, M. "Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying" . Chemistry of Materials 23, no. 9 (2011) : 2327-2332.
http://dx.doi.org/10.1021/cm103362c
---------- MLA ----------
Minaberry, Y., Jobbágy, M. "Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying" . Chemistry of Materials, vol. 23, no. 9, 2011, pp. 2327-2332.
http://dx.doi.org/10.1021/cm103362c
---------- VANCOUVER ----------
Minaberry, Y., Jobbágy, M. Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying. Chem. Mater. 2011;23(9):2327-2332.
http://dx.doi.org/10.1021/cm103362c