Novel polyorganosiloxane xerogels with bifunctional Si(CH2)3SH/Si(CH2)3NH2 surface layer
Novel polyorganosiloxanes gels with bifunctional ( ≡SiCH2)3SH/ ≡Si(CH2)3NH2) surface layer have been prepared by a sol-gel technique using silane-ternary systems. The surface properties of the obtained gels are highly reproducible. The effect of the addition of a catalyst was investigat...
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| Datum: | 2002 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2002
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/90 |
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| Назва журналу: | Surface |
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Surface| Zusammenfassung: | Novel polyorganosiloxanes gels with bifunctional ( ≡SiCH2)3SH/ ≡Si(CH2)3NH2) surface layer have been prepared by a sol-gel technique using silane-ternary systems. The surface properties of the obtained gels are highly reproducible. The effect of the addition of a catalyst was investigated, and it is shown that the addition of fluoride ion has a highly beneficial effect on the porous properties of the materials. The synthesized samples have specific surface areas up to 250 m²/g, and have a high potential as selective sorbents for heavy and noble metals (Hg2+, Ag+, Au3+ etc.). |
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