Optical, structural and physical properties of fluoride doped bioactive glasses

Advanced Bioactive Glasses: The Newest Achievements and Breakthroughs in the Area

“…In another discussion [ 81 ], the phosphate-based glass with a composition of P 2 O 5 -CaO-Na 2 O-MgO exhibited an increase in glass transition temperature (Tg) with a decrease in crystallization degree when B 2 O 3 was added at different mass percentages. The reason for the increase in Tg was that BO 4 units were incorporated into the glass network and B 3+ has a smaller cationic radius than Na + [ 82 ]. Thus, the higher boron content resulted in a higher crystallization temperature due to chain length and cross-linkage density increase [ 83 ].…”

“…Thus, the higher boron content resulted in a higher crystallization temperature due to chain length and cross-linkage density increase [ 83 ]. A very recent study [ 82 ] described the preparation and characterization of a phosphate-based bioactive glass with a unique composition of (60–x)NaPO 3 -25B 2 O 3 -xCaF 2 -15MgO, with x = 2.5, 5, 7.5, 10 and 12.5 mol%. Here, the samples were produced by melt quenching.…”