| Titre : | Aminosilane cross - linked PEG/PEPEG/PPEPG membranes for CO2/N2 and CO2/H2 separation (2010) |
| Auteurs : | Hailin Cong, Auteur ; Bing Yu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 19, Octobre 2010) |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Aminosilane Nanocomposite membranes |
| Résumé : | Aminosilane-modified poly(ethylene glycol) (PEG), PEG-block-poly(propylene glycol) (PPG)-block-PEG (PEPEG), and PPG-block-PEG-block-PPG (PPEPG) diacrylate prepolymers are synthesized as new membrane materials for gas separation. By combining the in situ sol−gel process and cross-linking process together, the silane-modified prepolymers form flexible nanocomposite membranes with a maximum CO2 permeability of 274 barrer and CO2/N2 selectivity of about 30. The CO2 permeabilities of silane cross-linked PEPEG and PPEPG membranes are higher than those of silane cross-linked PEG membranes, whereas the CO2/N2 and CO2/H2 selectivities increase as the PEG content increases in the membrane. A proper aminosilane/prepolymer reaction ratio benefits the gas separation performance of the membrane due to the formation of different cross-linking structures and composites. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1012568 |
