| Title: | Monolithic polymeric aerogels with VOCs sorbent nanoporous crystalline and water sorbent amorphous phases |
| Author(s): | Venditto V; Pellegrino M; Califano R; Guerra G; Daniel C; Ambrosio L; Borriello A; |
| Address: | "Department of Chemistry and Biology, Nanomates Center and INSTM Research Unit, University of Salerno , via Giovanni Paolo II, 84084 Fisciano, SA, Italy" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "Monolithic syndiotactic polystyrene (s-PS) aerogels, formed by highly crystalline nanofibrils with a hydrophobic nanoporous-crystalline phase and a hydrophilic amorphous phase have been prepared and characterized. These aerogels, with a high degree of sulfonation of the amorphous phase and nearly negligible sulfonation of the crystalline phase, are obtained by treating physical gels exhibiting delta-clathrate form. With respect to unsulfonated nanoporous-crystalline polymeric aerogels, these new selectively sulfonated aerogels present the great advantage of a high water diffusivity and water uptake up to 600 wt %. This water uptake increases greatly the sorption kinetics of organic pollutants by the hydrophobic nanopores of the crystalline phase. For instance, for aerogels with a sulfonation of 10%, the diffusivity of a volatile organic compound (1,2-dichloroethane, DCE) from 10 ppm aqueous solution is more than 3 orders of magnitude higher than that for the unsulfonated aerogel and is very close to the DCE diffusivity in water" |
| Keywords: | diffusivity nanoporous crystalline phase solid-state sulfonation syndiotactic polystyrene water uptake; |
| Notes: | "PubMed-not-MEDLINEVenditto, Vincenzo Pellegrino, Marina Califano, Rosa Guerra, Gaetano Daniel, Christophe Ambrosio, Luigi Borriello, Anna eng Research Support, Non-U.S. Gov't 2014/12/23 ACS Appl Mater Interfaces. 2015 Jan 21; 7(2):1318-26. doi: 10.1021/am507116e. Epub 2015 Jan 9" |
