TY - JOUR
T1 - Vibrational spectroscopy and thermal/dilatometric characterizations of Fe-containing bio-relevant glasses
AU - Jiménez, José A.
N1 - * Characterized by density, FT-IR, Raman, DSC, and dilatometry. * Structural and thermal properties suggested to be guided by P-O-Fe(III) bond formation. Bio-relevant glasses with 50P 2O 5-30CaO-(20 - x)Na 2O- xFe 2O 3 ( x = 0.1, 1, 5, 10 mol%) compositions were prepared by melting and studied by densitometry, Fourier transform-infrared (FT-IR) spectroscopy, Raman scattering, differential scanning calorimetry (DSC), and dilatometry.
PY - 2023/5
Y1 - 2023/5
N2 - Bio-relevant glasses with 50P2O5-30CaO-(20 – x )Na2O- x Fe2O3 ( x = 0.1, 1, 5, 10 mol%) compositions were prepared by melting and studied by densitometry, Fourier transform-infrared (FT-IR) spectroscopy, Raman scattering, differential scanning calorimetry (DSC), and dilatometry. The densities of the glasses increased linearly with Fe2O3 replacing Na2O. The FT-IR and Raman spectroscopy evaluation indicated that increasing Fe2O3 concentration modifies the glass structure via depolymerization effect, likely in connection with P–O–Fe(III) bond formation. The thermal evaluation showed a trend of increase in the glass transition and softening temperatures, whereas the coefficient of thermal expansion decreased with increasing Fe2O3 in agreement with a glass strengthening effect induced by iron(III).
AB - Bio-relevant glasses with 50P2O5-30CaO-(20 – x )Na2O- x Fe2O3 ( x = 0.1, 1, 5, 10 mol%) compositions were prepared by melting and studied by densitometry, Fourier transform-infrared (FT-IR) spectroscopy, Raman scattering, differential scanning calorimetry (DSC), and dilatometry. The densities of the glasses increased linearly with Fe2O3 replacing Na2O. The FT-IR and Raman spectroscopy evaluation indicated that increasing Fe2O3 concentration modifies the glass structure via depolymerization effect, likely in connection with P–O–Fe(III) bond formation. The thermal evaluation showed a trend of increase in the glass transition and softening temperatures, whereas the coefficient of thermal expansion decreased with increasing Fe2O3 in agreement with a glass strengthening effect induced by iron(III).
UR - https://www.sciencedirect.com/science/article/pii/S138770032300223X
U2 - 10.1016/j.inoche.2023.110611
DO - 10.1016/j.inoche.2023.110611
M3 - Article
SN - 1387-7003
VL - 151
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
ER -