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The influence of Na+ on the anilinepropylsilica xerogel synthesis by using the fluoride nucleophilic catalyst

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Abstract.

Anilinepropylsilica xerogel was obtained by using an appropriate organosilane and tetraethyl orthosilicate as precursor reagents. The gelation was carried out using HF and NaF as catalysts. The presence of Na+ (when NaF was used) resulted in a decrease in the final organic content of the materials. This effect was interpreted as an inhibition of the organosilane polycondensation possibly due to the Na+ interaction with the SiO– groups of the hydrolyzed organosilane. The presence of Na+ also results in morphological changes in the xerogels.

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Authors and Affiliations

  1. LSS, Instituto de Química – UFRGS, CP 15003, 91501-970 Porto Alegre, RS, Brazil, , , , ,

    Flávio A. Pavan, Celso C. Moro, Tania M. Costa & Edilson V. Benvenutti

  2. Instituto de Química, Unicamp, CP 6154, 13083-970 Campinas, SP, Brazil, , , , ,

    Yoshitaka Gushikem

Authors
  1. Flávio A. Pavan
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  2. Yoshitaka Gushikem
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  3. Celso C. Moro
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  4. Tania M. Costa
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  5. Edilson V. Benvenutti
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Pavan, F.A., Gushikem, Y., Moro, C.C. et al. The influence of Na+ on the anilinepropylsilica xerogel synthesis by using the fluoride nucleophilic catalyst. Colloid Polym Sci 281, 173–177 (2003). https://doi.org/10.1007/s00396-002-0771-3

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  • DOI: https://doi.org/10.1007/s00396-002-0771-3

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