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| Crystallization of Combeite in 45S5 Bioglass using Bamboo leaf, Turkey eggshell and Sodium oxide
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Orlando Ketebu and Precious Damini Daniel
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Abstract:
The development in bioglass ceramic materials has led to its wide applications in medical, biomedical, and tissue engineering. Bioglass ceramics has been used in wound and disease treatment, bone fixing, tissue recovery, scaffolding and in the formation of implantable devices. Bioglass ceramics for these types of applications are expected to be bioactive with good mechanical properties that can suit the desired application. The synthesis of bioglass ceramics containing pure combeite phase has made some of the medical and tissue engineering application possible. Combeite is known to possess mechanical properties that are desirable in bioglass ceramics. It is the phase with strong mechanically features that is formed during the crystallization of 45S5 bioglass at high temperature. The crystallization of 45S5 bioglass ceramics with only combeite (Na2Ca2Si3O9) phase has been of challenge due to the presence of other phase that might form through the process. This work looks at crystalizing combeite in 45S5 biocompatible glass through melting process at temperature 1100 oC using Bamboo leaves, turkey eggshell and sodium carbonate as source of silicon dioxide, calcium oxide and sodium oxide respectively. The XRD result showed that at temperature 1100 oC bioglass with a single phase of combeite was formed at 2 theta angle of 34.5o. The SEM image confirms this result as it showed a compact consolidated material due to the crystallization and densification of the 45S5 bioglass. This result showed that bamboo leaves and turkey shells compositions favoured the one spot formation of single crystalline phase of combeite at 1100 oC which gives the bioglass its mechanical properties that makes it suitable for most medical, biomedical, and tissue engineering applications
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