Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying
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 mi...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_08974756_v23_n9_p2327_Minaberry |
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todo:paper_08974756_v23_n9_p2327_Minaberry2023-10-03T15:43:53Z Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying Minaberry, Y. Jobbágy, M. 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 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. Fil:Minaberry, Y. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Jobbágy, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08974756_v23_n9_p2327_Minaberry |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Minaberry, Y. Jobbágy, M. Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Minaberry, Y. Jobbágy, M. |
| author_facet |
Minaberry, Y. Jobbágy, M. |
| author_sort |
Minaberry, Y. |
| title |
Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| title_short |
Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| title_full |
Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| title_fullStr |
Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| title_full_unstemmed |
Macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| title_sort |
macroporous bioglass scaffolds prepared by coupling sol-gel with freeze drying |
| url |
http://hdl.handle.net/20.500.12110/paper_08974756_v23_n9_p2327_Minaberry |
| work_keys_str_mv |
AT minaberryy macroporousbioglassscaffoldspreparedbycouplingsolgelwithfreezedrying AT jobbagym macroporousbioglassscaffoldspreparedbycouplingsolgelwithfreezedrying |
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1782025076027162624 |