The coordination state of B and Al of borosilicate glass by IR spectra

Abstract

The IR spectra of R₂O-RO-B₂O₃-SiO₂ and R₂O-RO-B₂O₃-Al₂O₃-SiO₂ glasses were tested for the study of coordination state of B, Al and their content. The results show that no matter Na₂O/B₂O₃>1, =1, or<1, both [BO₃] and destroyed Si-O bond exist in glass structure; the addition of Al₂O₃ to borosilicate glass reduced both the number of non-bridging oxygen in the silicate network and the number of [BO₄] units.

Keywords

borosilicate glass / IR spectra / coordination / structure

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