Hybrid RSiO1.5/B2O3 Gels from Modified Silicon Alkoxides and Boric Acid
- Cite this article as:
- Soraru, G.D., Babonneau, F., Gervais, C. et al. Journal of Sol-Gel Science and Technology (2000) 18: 11. doi:10.1023/A:1008733511697
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A new sol-gel route, without any external water addition, for the preparation of hybrid RSiO1.5/B2O3 gels (R = Me, Et, Vi) is reported. The gels are easily synthesized by reacting B(OH)3 with the liquid silicon alkoxide. The gels have been characterized mainly by FT-IR and 11B MAS NMR spectroscopy. The results show that this new sol-gel process allows the formation of a homogeneous borosilicate gel in which trigonal BO3 units are incorporated into the siloxane network via B—O—Si bonds.