Role of Water as co-Porogen in Synthesis of Mesoporouspoly(divinylbenzenes)

0428867 - ÚCHP 2015 SK eng C - Konferenční příspěvek (zahraniční konf.)
Hanková, Libuše - Holub, Ladislav - Meng, X. - Xiao, F.-S. - Jeřábek, Karel
Role of Water as co-Porogen in Synthesis of Mesoporouspoly(divinylbenzenes).
Proceedings. Bratislava: AXIMA Graphics Design & Printing Services, 2014 - (Markoš, J.), s. 27. ISBN 978-80-89475-13-1.
[International Conference of Slovak Society of Chemical Engineering /41./. Tatranské Matliare (SK), 26.05.2014-30.05.2014]
Institucionální podpora: RVO:67985858
Klíčová slova: water * morphology of mesoporous * polymer
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství

Morphology of mesoporous poly(divinylbenzenes) prepared at so called hydrothermal conditions when monomers were dilluted with 10-times greater volume of porogene solvent (tetrahydrofuran with 0 – 20 % water) was studied both in dry-state (nitrogen adsorption/desorption) and swollen-state (inverse steric exclusion chromatography). There was found that pore volume in the polymer examined just after preparation corresponded to the volume of the porogene used. Such high porosity can be explained only on the base of pore formation through microsyneresis and not by macrosyneresis mechanism common in synthesis of conventional porous polymer materials. Drying of course induces a pore collapse and the addition of water to the porogene influences ability of the polymer to regain the original pore volume by re-swelling in tetrahydrofuran.
Trvalý link: http://hdl.handle.net/11104/0234103