Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Advances in science and technology
Vol. 45 (Oct. 2006), p. 759-768
ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Organic-inorganic hybrid monoliths with well-defined macropores and/or mesopores havebeen synthesized by a sol-gel process accompanied by polymerization-induced phase separation.Using aklyltrialkoxysilanes and alkylene-bridged alkoxysilanes, two different categories oforgano-siloxane networks have been characterized in view of macroporoisity based on phaseseparation as well as mesoporosity based on supramolecular templating by surfactants. Thealkyl-terminated polysiloxane network exhibited substantial surface hydrophobicity together with themechanical flexibility. On the other hand, the alkylene-bridged network behaved much moresimilarly to those prepared from tetraalkoxysilanes with regard to surface hydrophilicity, mechanicalrigidness and mesopore-forming ability. Supramolecular templating of mesopores embedded in thegel skeletons comprising well-defined macroporous network has proven to give wide variety ofhierarchically designed macro-mesoporous organic-inorganic hybrid materials
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.759.pdf
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