The effect of drying method on the surface structure of mesoporous sol-gel derived bioactive glass-ceramic

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Abstract

Mesoporous bioactive glass ceramic in the system of 60SiO2-36CaO-4P2O5 (mol.%) named 58S was synthesized using the sol-gel process. The effect of different drying methods (oven-drying, freeze drying, and vacuum drying) on the structure of 58S bioactive glass ceramic was investigated. Samples were characterized by scanning electron microscopy (SEM) and nitrogen sorption porosimetry (BET). SEM images of the samples after drying and then calcination indicated crystals formed in the 58S glass. The nitrogen isotherm of all samples calcinated at 600 °C revealed a mesoporous structure for 58S glass-ceramics. BET surface area of freeze-dried sample after calcination was greater than that of the oven and vacuum dried specimens. Drying methods had significant effect on morphology, surface area, and shape of pores.

Original languageEnglish
Article number012003
JournalIOP Conference Series: Materials Science and Engineering
Volume856
Issue number1
DOIs
Publication statusPublished - 28 May 2020
Event2019 5th International Conference on Smart Materials Research, ICSMR 2019 - Brisbane, Australia
Duration: 13 Nov 201916 Nov 2019

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