Abstract
Sintering-induced crystallization phenomenon plays a major role in deciding a biomaterial's application. Among all, sodium cation still creates curiosity and controversy among researchers on their role in the bioactive glass network. The kinetic study of bioactive glasses (BG) with and without sodium cations was studied using TG-DTA analysis carried out under non-isothermal conditions at different heating rates. Kinetic triplets were calculated from both model-free (KAS) and model-fitting (CR) methods. It is found that traditional 45S BG obeys power law whereas sodium-free obeys third-order and diffusion-reaction models respectively with a lower pre-exponential factor. The variation in Eaof the system i.e., 11.690 kJ/mol for 45S BG and an average of 7.591 kJ/mol for 59S BG. Entropy (ΔS), Enthalpy (ΔH), and Gibb's free energy (ΔG) were also calculated. This present study is effectively note-worthy as it demonstrated important kinetic parameters to design biomaterial with erythrocyte and tissue compatibility for appropriate biomedical applications.
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