Comparison between Bioactive Sol-Gel and Melt-Derived Glasses/Glass-Ceramics Based on the Multicomponent SiO2-P2O5-CaO-MgO-Na2O-K2O System

被引:66
作者
Fiume, Elisa [1 ,2 ,3 ]
Migneco, Carla [1 ]
Verne, Enrica [1 ,3 ,4 ]
Baino, Francesco [1 ,3 ,4 ]
机构
[1] Politecn Torino, Dept Appl Sci & Technol, Inst Mat Phys & Engn, I-10129 Turin, Italy
[2] Politecn Torino, Dept Mech & Aerosp Engn, I-10129 Turin, Italy
[3] Politecn Torino, Interdept Ctr, PoliTo BIOMedLab, I-10129 Turin, Italy
[4] Politecn Torino, Interdept Ctr J Tech PoliTO, I-10129 Turin, Italy
关键词
bioactive glass; glass-ceramic; biomaterials; bioceramics; sol-gel; bioactivity; porosity; bone tissue engineering; textural properties; nanomaterials; IN-VITRO; HUMAN OSTEOBLASTS; BONE SUBSTITUTES; IONIC PRODUCTS; 45S5; SCAFFOLDS; ANTIBACTERIAL; DISSOLUTION; EXPRESSION; BEHAVIOR;
D O I
10.3390/ma13030540
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Bioactive sol-gel glasses are attractive biomaterials from both technological and functional viewpoints as they require lower processing temperatures compared to their melt-derived counterparts and exhibit a high specific surface area due to inherent nanoporosity. However, most of these materials are based on relatively simple binary or ternary oxide systems since the synthesis of multicomponent glasses via sol-gel still is a challenge. This work reports for the first time the production and characterization of sol-gel materials based on a six-oxide basic system (SiO2-P2O5-CaO-MgO-Na2O-K2O). It was shown that calcination played a role in inducing the formation of crystalline phases, thus generating glass-ceramic materials. The thermal, microstructural and textural properties, as well as the in vitro bioactivity, of these sol-gel materials were assessed and compared to those of the melt-derived counterpart glass with the same nominal composition. In spite of their glass-ceramic nature, these materials retained an excellent apatite-forming ability, which is key in bone repair applications.
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页数:13
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