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BRANCHING STRUCTURE IN BaO-PbO-SrO-P2O5 PHOSPHATE GLASS PREPARED BY MICROWAVE HEATING
2006
Phosphorus Research Bulletin
Preserved Fulltext
Phosphate glass with a composition of 15BaO-10PbO-5SrO-70P 2 O 5 has been prepared by 2.45 GHz microwave heating. In the 31 P MAS NMR spectra of this glass, we observed the strong Q 3 band corresponding to the branching PO 4 group which was not observed in the glass prepared by conventional electric furnace heating. The presence of branching points means that the glass prepared by microwave has three-dimensionally polymerized structure, which gives the higher stability of the glass.
doi:10.3363/prb.20.185
fatcat:q6enm6b3qzbmzhw3pffew43sfu