Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer?
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 proper...
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Universidade Estadual Paulista
2021-01-01
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doaj-5e54e09435054d20baaa17552d3707312021-01-04T14:43:05ZengUniversidade Estadual PaulistaEclética Química1678-46182021-01-01461526010.26850/1678-4618eqj.v46.1.2021.p52-601067Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer?Karen Gonzaga0Jose Carlos Mierzwa1University of São Paulo, Engineering, Polytechnic School, Department of Hydraulic and Environmental, São Paulo, São Paulo, Brazil.University of São Paulo, Engineering, Polytechnic School, Department of Hydraulic and Environmental, São Paulo, São Paulo, Brazil.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.http://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/1134 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Karen Gonzaga Jose Carlos Mierzwa |
spellingShingle |
Karen Gonzaga Jose Carlos Mierzwa Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? Eclética Química |
author_facet |
Karen Gonzaga Jose Carlos Mierzwa |
author_sort |
Karen Gonzaga |
title |
Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? |
title_short |
Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? |
title_full |
Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? |
title_fullStr |
Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? |
title_full_unstemmed |
Comparison between two Polyethersulfone concentrations in hollow fiber ultrafiltration membranes. Is it worth to use more polymer? |
title_sort |
comparison between two polyethersulfone concentrations in hollow fiber ultrafiltration membranes. is it worth to use more polymer? |
publisher |
Universidade Estadual Paulista |
series |
Eclética Química |
issn |
1678-4618 |
publishDate |
2021-01-01 |
description |
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. |
url |
http://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/1134 |
work_keys_str_mv |
AT karengonzaga comparisonbetweentwopolyethersulfoneconcentrationsinhollowfiberultrafiltrationmembranesisitworthtousemorepolymer AT josecarlosmierzwa comparisonbetweentwopolyethersulfoneconcentrationsinhollowfiberultrafiltrationmembranesisitworthtousemorepolymer |
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