Hybrid RSiO1.5/B2O3 Gels from Modified Silicon Alkoxides and Boric Acid |
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| Authors: | Soraru Gian Domenico Babonneau Florence Gervais Christel Dallabona Nicola |
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| Institution: | (1) Dipartimento di Ingegneria dei Materiali, Università di Trento, Via Mesiano 77, I-38050 Trento, Italy;(2) Chimie de la Matière Condensée, Université Pierre et Marie Curie, CNRS, 4 place Jussieu, F-75005 Paris, France;(3) Chimie de la Matière Condensée, Université Pierre et Marie Curie, CNRS, 4 place Jussieu, F-75005 Paris, France;(4) Dipartimento di Ingegneria dei Materiali, Università di Trento, Via Mesiano 77, I-38050 Trento, Italy |
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| Abstract: | 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. |
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| Keywords: | borosilicate gel B(OH)3 hybrid gels FT-IR 11B MAS-NMR |
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