Novel Ringing Silica Gels That Do Not Shrink

Regulation of silica morphology by proteins serving as a template for mineralization

“…It is worth also mentioning that THEOS was first used by Hoffmann with collaborators to synthesize hybrid nanomaterials on the basis of surfactants [32,33]. They demonstrated that this precursor did not cause the precipitation of surfactants and restructuring of their lyotropic mesophase.…”

Gelling of otherwise nongelable polysaccharides

“…To perform the sol-gel processing, it was necessary, as usual (see Refs. [16,17]), to add a catalyst (acid or alkaline). In this case, a monolithic gelled material was formed when no less than 20 wt% of THEOS was mixed with water.…”

Sol-gel synthesis, porous structure, and mechanical property of polymethylsilsesquioxane aerogels

“…Wet gels of CTAB-1 and CTAC-1 did not shrink during aging, which may result from the repulsion of ionic charge of CTAB or CTAC on the networks of the wet gels. This situation resembles the case where a small quantity of cationic silicon alkoxide is copolymerized with tetrafunctional one, 20) in which positive surface charge prohibits the attraction of neighboring silanol groups and shrinkage during aging is significantly suppressed. In F127-1, a small shrinkage (1.2%) is observed during aging presumably because of the additional condensation of unreacted silanol groups.…”