The Effects of Fe<sub>2</sub>O<sub>3</sub> and B<sub>2</sub>O<sub>3</sub> on the Glass Structural, Thermal, <i>in Vitro</i> Degradation Properties of Phosphate Based Glasses

Abstract

Currently, phosphate based glasses have been potential future biomaterial for medical application due to excellent cytocompatibility and fully bioresorbability. In this study, phosphate based glass system with composition of 48P 2 O 5 -12B 2 O 3 -(25-X)MgO-14CaO-1Na 2 O-(X)Fe 2 O 3 (X = 6, 8, 10) and = 12, 15, 20), was prepared via a melting quenching process. The effect of replacing MgO with Fe 2 O 3 and B 2 O 3 on the structural, thermal, degradation properties of phosphate based glass was investigated. Fourier Transform Infrared (FTIR) spectroscopy and Raman spectroscopy analysis confirmed the polymerisation of phosphate based glass network with addition of Fe 2 O 3 , thus the processing window was observed to increase whilst the dissolution rate was reduced, attributed to the formation of Fe-O-P cross-link. As the effect on the glass structure stability was demonstrated by both B 2 O 3 and MgO, the nonlinear variation of thermal stability and degradation behaviour was observed for glass system with substitution of MgO by B 2 O 3 . However, due to the lower dissolution rate of glass system when compared to the biocompatible phosphate based glass in preliminary study, the expected cytocompatibility could be confirmed in the downstream activities.

Mechanical properties and in vitro degradation behavior of additively manufactured phosphate glass particles/fibers reinforced polylactide

“…Phosphate glass and glass fibers with identical chemical composition as P48‐B12‐Ca14‐Mg17‐Na1‐Fe8 were used. Phosphate glass was prepared following the protocol described elsewhere . Briefly, the glass precursors were weighed, blended in the platinum crucible and isothermally heated at 300 °C for 30 min to remove moisture.…”

Towards better understanding of structural, physical and radiation attenuation properties of the granites in Aegean region of Turkey: İzmir and Kütahya Provinces

“…The purpose of this work was to describe several granite types extracted from different regions in western Turkey in detail, as well as to evaluate prospective application circumstances in areas with industrial and research radiation sources. Examining certain fundamental properties of materials considered as radiation shielding materials across a broad energy range is a critical step in determining their likely behavior tendencies at various gamma-ray energies and their dependability in application [40][41][42][43]. The mass attenuation coefficients (μ m ) of the five granite samples studied in this investigation were calculated in 0.015-15 MeV gamma-ray energy range using a standard gamma-ray transmission setup (see figure 4).…”