Abstract
Thermal and structural properties of model silicate-phosphate glasses containing the different amounts of the glass network modifiers, i.e. Mg2+ and Ca2+ were studied. To explain the changes of the parameters characterizing the glass transition effect (Tg, Δcp) and the crystallization process (Tc, ΔH) depending on the cations modifiers additions, analysis of the bonds and chemical interactions of atoms in the structure of glasses was used.
31P MAS-NMR spectra of SiO2–P2O5–MgO(CaO)–K2O glasses show that the phosphate complexes are mono- and diphosphate. It has been found that increasing amounts of Mg2+ or Ca2+ cations in the structure of glasses causes the reduction of the degree of polymerization of the phosphate framework (Q1→Q0). The influence of increasing of modifiers in the structure of silicate- phosphate glasses on the number of non-bridging oxygens per SiO4 tetrahedron and density of glasses was presented.
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References
L Stoch I Wacławska A Lis-Krzyścin (2001) Chem. Agriculture 2 74
I Wacławska M Szumera J Ostrowska (2002) Chem. Agriculture 3 303
I Wacławska L Stoch J Ostrowska (1998) Ceramika/Ceramics 57 221
M Szumera I Wacławska W Mozgawa M Sitarz (2005) J. Mol. Struct. 744–747 609
I Wacławska L Stoch (2001) J. Therm. Anal. Cal. 65 141
I Wacławska M Szumera (2003) J. Therm. Anal. Cal. 72 1065
G Walter J Vogel U Hoppe P Hartmann (2001) J. Non-Cryst. Solids 296 212 Occurrence Handle10.1016/S0022-3093(01)00912-7 Occurrence Handle1:CAS:528:DC%2BD3MXptlCrtLo%3D
F Branda A Costantini G Luciani G Laudisiom (2001) J. Therm. Anal. Cal. 64 1017 Occurrence Handle10.1023/A:1011595618322 Occurrence Handle1:CAS:528:DC%2BD3MXlslKqtLo%3D
J. M. Oliveira and R. N. Correia, Proc. XVIII ICG in San Francisco, 1998, D-3
MWG Lockyer D Holland R Dupree (1995) J. Non-Cryst. Solids 188 207 Occurrence Handle10.1016/0022-3093(95)00188-3 Occurrence Handle1:CAS:528:DyaK2MXntFGiu7Y%3D
L Stoch (1998) J. Therm Anal. Cal. 54 9 Occurrence Handle10.1023/A:1010127129729 Occurrence Handle1:CAS:528:DyaK1MXktFantw%3D%3D
E Görlich et al. (1997) The effective charges and the electronegativity Polish Academy of Art. and Science Krakow
I Barin O Kuache et al. (1973) Thermochemical properties of Inorganic Substances Springer-Verlag Germany
H Grussaute L Montagne G Palavit JL Bernard (2000) J. Non-Cryst. Solids 263–264 312
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Wacławska, I., Szumera, M. Influence of MgO (CaO) on the structure of silicate-phosphate glasses. J Therm Anal Calorim 84, 185–190 (2006). https://doi.org/10.1007/s10973-005-7183-9
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DOI: https://doi.org/10.1007/s10973-005-7183-9