| Titre : | Performance improvement of polysulfone ultrafiltration membrane using well - dispersed polyaniline – poly (vinylpyrrolidone) nanocomposite as the additive (2012) |
| Auteurs : | Song Zhao, Auteur ; Zhi Wang, Auteur ; Xin Wei, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 12, Mars 2012) |
| Article en page(s) : | pp. 4661–4672 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Ultrafiltration membrane Nanocomposite |
| Résumé : | Well-dispersed polyaniline–poly(vinylpyrrolidone) (PANI–PVP) nanocomposite was synthesized through dispersion polymerization and then used as a novel additive to prepare a polysulfone (PSf)/PANI–PVP nanocomposite membrane via immersion precipitation process. During membrane formation, a portion of PVP acted as a pore-forming agent while another PANI–PVP nanocomposite, combined by hydrogen bonds between carbonyl groups of PVP and N-hydrogen groups of PANI, acted as a hydrophilic modification agent. The addition of PANI–PVP nanocomposite increased membrane surface pore size, porosity, and hydrophilicity. Pure water fluxes of PSf/PANI–PVP nanocomposite membranes were 1.8–3.5 times that of PSf membrane with a slight change of bovine serum albumin (BSA) rejection. The membrane antifouling property was examined by the cross-flow ultafiltration using BSA solution as the model system. The results of flux decline behavior and flux recovery ratio showed that PSf/PANI–PVP nanocomposite membranes had an excellent antifouling property. Compared with PSf/PVP membranes prepared using PVP as the additive, PSf/PANI–PVP nanocomposite membranes processed higher pure water flux and better hydrophilicity, antifouling property, and stability. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie202503p |
