Structural, thermal and dissolution properties of MgO- and CaO-containing borophosphate glasses: effect of Fe2O3 addition

Tan, Chao, Ahmed, Ifty, Parsons, Andrew J., Sharmin, Nusrat, Zhu, Chenkai, Liu, Jinsong, Rudd, Chris D., and Liu, Xiaoling (2017) Structural, thermal and dissolution properties of MgO- and CaO-containing borophosphate glasses: effect of Fe2O3 addition. Journal of Materials Science, 52 (12). pp. 7489-7502.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: https://doi.org/10.1007/s10853-017-0981-...
8


Abstract

This paper investigated manufacture of high-durability phosphate glass fibres for biomedical applications. Five different borophosphate glass formulations in the systems of 45P(2)O(5)-5B(2)O(3)-5Na(2)O-(29 - x)CaO-16MgO-(x)Fe2O3 and 45P(2)O(5)-5B(2)O(3)-5Na(2)O-24CaO-(21 - x)MgO-(x)Fe2O3 where x = 5, 8 and 11 mol% were produced via melt quenching. The compositions and amorphous nature of the glasses were confirmed by ICP-MS and XRD, respectively. FTIR results indicated depolymerisation of the phosphate chains with a decrease in Q (2) units with increasing Fe2O3 content. DSC analyses showed an increase in T (g) by similar to 5 A degrees C with an increment of 3 mol% in Fe2O3 content. The thermal properties were also used to calculate processing window (i.e. T (c,ons)-T (g)) and another parameter, K (gl), to determine the suitability for fibre drawing directly from melt, which equals (T (c,ons)-T (g))/(T (l)-T (c,ons)). The degradation study conducted in PBS solution at 37 A degrees C showed a decrease of 25-47% in degradation rate with increasing Fe2O3 content. This confirmed that the chemical durability of the glasses had increased, which was suggested to be due to Fe2O3 addition. Furthermore, the density measured via Archimedes method revealed a linear increase with increasing Fe2O3 content.

Item ID: 58012
Item Type: Article (Research - C1)
ISSN: 1573-4803
Funders: Ningbo Education Bureau, Ningbo Science and Technology Bureau, University of Nottingham
Date Deposited: 17 Apr 2019 09:23
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8608 Human Pharmaceutical Products > 860899 Human Pharmaceutical Products not elsewhere classified @ 100%
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page