A hundred times faster: Novel, rapid sol‐gel synthesis of bio‐glass nanopowders (Si‐Na‐Ca‐P system, Ca:P = 1.67) without aging

Synthesis of sol‐gel glass with incorporation of Na2O is extremely difficult, as such glasses have a great tendency to crystallize. Slow drying and aging over several days or weeks is usually required in sol‐gel preparation procedures. This work reports a fast, novel route for the synthesis of biogl...

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Bibliographic Details
Published in:International journal of applied glass science 2017-09, Vol.8 (3), p.337-343
Main Authors: Ben‐Arfa, Basam A. E., Miranda Salvado, Isabel M., Ferreira, José M. F., Pullar, Robert C.
Format: Article
Language:English
Subjects:
Aging
bioactivity
Biocompatibility
Bioglass
Crystallization
Degree of polymerization
Devitrification
Drying ovens
Evaporation
Glass
Glass Forming Systems
Infrared spectroscopy
NMR
Nuclear magnetic resonance
oxide
phosphate
Polymerization
Production methods
Sol-gel processes
Synthesis
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Summary:Synthesis of sol‐gel glass with incorporation of Na2O is extremely difficult, as such glasses have a great tendency to crystallize. Slow drying and aging over several days or weeks is usually required in sol‐gel preparation procedures. This work reports a fast, novel route for the synthesis of bioglass powders in a considerably shortened period of 1 h. A comparative study of sol‐gel derived glasses made by this novel route using rotary evaporator drying, and a conventional route using oven drying and aging, revealed that the two methods produce stabilized (devitrified) bio‐glasses with virtually identical behavior and properties. Indeed, the rapidly dried powder exhibited slightly enhanced properties that should result in improved bioactivity. Fourier‐transform infrared spectroscopy was used to understand the structures of the synthesized powders, and MAS‐NMR was used to look at the degree of polymerization. This innovative, rapid route was successfully demonstrated to produce glass and devitrified glass nanopowders more than one hundred times quicker than the quickest reported standard drying methods.
ISSN:2041-1286
2041-1294
DOI:10.1111/ijag.12255