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Hybrid RSiO1.5/B2O3 Gels from Modified Silicon Alkoxides and Boric Acid

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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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Authors and Affiliations

  1. Dipartimento di Ingegneria dei Materiali, Università di Trento, Via Mesiano 77, I-38050, Trento, Italy

    Gian Domenico Soraru

  2. Chimie de la Matière Condensée, Université Pierre et Marie Curie, CNRS, 4 place Jussieu, F-75005, Paris, France

    Florence Babonneau

  3. Chimie de la Matière Condensée, Université Pierre et Marie Curie, CNRS, 4 place Jussieu, F-75005 Paris, France

    Christel Gervais

  4. Dipartimento di Ingegneria dei Materiali, Università di Trento, Via Mesiano 77, I-38050, Trento, Italy

    Nicola Dallabona

Authors
  1. Gian Domenico Soraru
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  2. Florence Babonneau
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  3. Christel Gervais
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  4. Nicola Dallabona
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Soraru, G.D., Babonneau, F., Gervais, C. et al. Hybrid RSiO1.5/B2O3 Gels from Modified Silicon Alkoxides and Boric Acid. Journal of Sol-Gel Science and Technology 18, 11–19 (2000). https://doi.org/10.1023/A:1008733511697

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