| Journal: | Ecletica quimica |
| Database: | |
| System number: | 000552476 |
| ISSN: | 0100-4670 |
| Authors: | Gonzaga, Karen1 Mierzwa, Jose Carlos1 |
| Institutions: | 1University of São Paulo, Engineering, Polytechnic School, Department of Hydraulic and Environmental, São Paulo, São Paulo, Brazil., |
| Year: | 2021 |
| Volumen: | 46 |
| Number: | 1 |
| Pages: | 52-60 |
| Country: | Brasil |
| Language: | Inglés |
| English abstract | Polyethersulfone (PES) hollow fiber membranes were fabricated using dry-jet wet spinning technique, a phase inversion method, with 16 and 20% PES, N-methyl-2-pyrrolidone (NMP) as solvent and tap water as nonsolvent, in order to evaluate if the amount of polymer has a significant effect on its properties. They were characterized using SEM for a morphological analysis, a continuous system to measure pure water permeability (PWP) and molecular weight cutoff (MWCO), and a universal testing machine to tensile tests. The obtained results for PWP was an average of about 220 L m- ² h-1 bar-1 for the 16% PES membrane and 174 L m- ² h-1 bar-1 for the 20% PES membrane. The results of mechanical resistance and MWCO did not present statistical differences. Thus, it is confirmed that the 16% PES membrane can be as good as the 20%, despite using less polymer, a finding that can further motivate membrane modification studies and other related works. |
| Full text: | Texto completo (Ver PDF) |
