Skip to main content

Research Repository

Advanced Search

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.; Liu, Xiaoling


Chao Tan

Andrew J. Parsons

Nusrat Sharmin

Chenkai Zhu

Jinsong Liu

Chris D. Rudd

Xiaoling Liu


This paper investigated manufacture of high-durability phosphate glass fibres for biomedical applications. Five different borophosphate glass formulations in the systems of 45P2O5–5B2O3–5Na2O–(29 − x)CaO–16MgO–(x)Fe2O3 and 45P2O5–5B2O3–5Na2O–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 Q2 units with increasing Fe2O3 content. DSC analyses showed an increase in Tg by ~5 °C with an increment of 3 mol% in Fe2O3 content. The thermal properties were also used to calculate processing window (i.e. Tc,ons—Tg) and another parameter, Kgl, to determine the suitability for fibre drawing directly from melt, which equals (Tc,ons—Tg)/(Tl—Tc,ons). The degradation study conducted in PBS solution at 37 °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.


Tan, C., Ahmed, I., Parsons, A. J., Sharmin, N., Zhu, C., Liu, J., …Liu, X. (2017). Structural, thermal and dissolution properties of MgO- and CaO-containing borophosphate glasses: effect of Fe2O3 addition. Journal of Materials Science, 52(12), 7489-7502.

Journal Article Type Article
Acceptance Date Mar 6, 2017
Online Publication Date Mar 16, 2017
Publication Date 2017-06
Deposit Date Mar 22, 2017
Publicly Available Date Mar 22, 2017
Journal Journal of Materials Science
Print ISSN 0022-2461
Electronic ISSN 1573-4803
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 52
Issue 12
Pages 7489-7502
Public URL
Publisher URL
Additional Information This is a post-peer-review, pre-copyedit version of an article published in Journal of Materials Science. The final authenticated version is available online at:


You might also like

Downloadable Citations