Investigating the mechanical durability of bioactive glasses as a function of structure solubility and incubation time

Y. Li, A. Coughlan, F. R. Laffir, D. Pradham, N. P. Mellott, A. W. Wren

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This study focuses on investigating the solubility of a series of bioactive glasses that alternates the sodium (Na+) and strontium (Sr 2 +) concentration. Additionally, this study investigates the effect of crystallization of these glasses and the subsequent effect on ion release, pH and mechanical strength as a function of incubation time. Ion release profiles were determined over 1, 7 and 30 days and in each case ion release was greatly reduced when the materials were crystallized. Additionally pH changes were reduced with the onset of crystallization compared to the amorphous counterparts. The most prominent changes in solubility can be attributed to the Na+ containing glasses, which presented the more soluble glasses and hence higher changes in pH. Regarding the amorphous materials, hardness was found to significantly reduce with respect to maturation; however the crystallized analogues presented much higher hardness values that did not reduce with respect to incubation time.

    Original languageEnglish
    Pages (from-to)25-34
    Number of pages10
    JournalJournal of Non-Crystalline Solids
    Volume380
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Bioactive glass
    • Crystalline
    • Hardness
    • Ion release
    • Solubility

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