Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols
Polyethersulfone ultrafiltration membranes have been prepared using polyethylene glycols (PEGs) of 400, 1000, and 10,000 gmol, as additive with dimethylacetamide as solvent. Infrared analysis proves that PEG leaves almost completely the surface of the membranes after 24 h of water immersion. Scannin...
| Autores: | ; ; ; ; ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2013 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/129426 |
| Acceso en línea: | http://hdl.handle.net/11336/129426 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | polyethersulphone membranes ultrafiltration membranes modified membranes polyethylene glycol https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| _version_ | 1878403268453859328 |
|---|---|
| author | Méndez, Mercedes Liliana |
| author2 | Romero, Analía Irma Rajal, Verónica Beatriz Castro Vidaurre, Elza Fani Calvo, José I. Palacio, Laura Hernandez, Antonio |
| author2_role | author author author author author author |
| author_browse | Calvo, José I. Castro Vidaurre, Elza Fani Hernandez, Antonio Méndez, Mercedes Liliana Palacio, Laura Rajal, Verónica Beatriz Romero, Analía Irma |
| author_facet | Méndez, Mercedes Liliana Romero, Analía Irma Rajal, Verónica Beatriz Castro Vidaurre, Elza Fani Calvo, José I. Palacio, Laura Hernandez, Antonio |
| author_role | author |
| collection | CONICET Digital (CONICET) |
| description | Polyethersulfone ultrafiltration membranes have been prepared using polyethylene glycols (PEGs) of 400, 1000, and 10,000 gmol, as additive with dimethylacetamide as solvent. Infrared analysis proves that PEG leaves almost completely the surface of the membranes after 24 h of water immersion. Scanning electron microscopy, contact angle, and liquid-liquid displacement porometry have been used to characterize the membrane morphology, surface hydrophilicity and porous structure. The relative flux reduction factor, flux, retention - of PEG (20,000 and 35,000 g/mol) and bovine serum albumin (67,000 g/mol) - and pure water permeability have been measured for the membranes. Results show that the addition of PEG increases slightly hydrophilicity and decreases pore size and narrows the corresponding pore size distribution while thickening the skin layer, in spite of the fast disappearance of the added PEG form the membrane surface. The resulting flux and pure water permeability are higher when middle size PEGs are added but decrease again when very high molecular weight (MW) PEGs are added. Retention decreases initially for increasing MWs of PEG although for very long PEG chains (MW of 10,000 g/mol) retention increases again. After filtration, the membranes with PEG added showed a lower relative flux reduction that decreases for increasing MW of the added PEGs. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_5e36a6d2e4a8f2a4c4b5ab5ba106cf78 |
| identifier_str_mv | Méndez, Mercedes Liliana; Romero, Analía Irma; Rajal, Verónica Beatriz; Castro Vidaurre, Elza Fani; Calvo, José I.; et al.; Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols; John Wiley & Sons Inc; Polymer Engineering and Science; 54; 5; 4-2013; 1211-1221 0032-3888 CONICET Digital CONICET |
| institution | Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str | Consejo Nacional de Investigaciones Científicas y Técnicas |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | oai:ri.conicet.gov.ar:11336/129426 |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | John Wiley & Sons Inc |
| publisherStr | John Wiley & Sons Inc |
| reponame_str | CONICET Digital (CONICET) |
| spelling | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols Méndez, Mercedes Liliana Romero, Analía Irma Rajal, Verónica Beatriz Castro Vidaurre, Elza Fani Calvo, José I. Palacio, Laura Hernandez, Antonio polyethersulphone membranes ultrafiltration membranes modified membranes polyethylene glycol https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Polyethersulfone ultrafiltration membranes have been prepared using polyethylene glycols (PEGs) of 400, 1000, and 10,000 gmol, as additive with dimethylacetamide as solvent. Infrared analysis proves that PEG leaves almost completely the surface of the membranes after 24 h of water immersion. Scanning electron microscopy, contact angle, and liquid-liquid displacement porometry have been used to characterize the membrane morphology, surface hydrophilicity and porous structure. The relative flux reduction factor, flux, retention - of PEG (20,000 and 35,000 g/mol) and bovine serum albumin (67,000 g/mol) - and pure water permeability have been measured for the membranes. Results show that the addition of PEG increases slightly hydrophilicity and decreases pore size and narrows the corresponding pore size distribution while thickening the skin layer, in spite of the fast disappearance of the added PEG form the membrane surface. The resulting flux and pure water permeability are higher when middle size PEGs are added but decrease again when very high molecular weight (MW) PEGs are added. Retention decreases initially for increasing MWs of PEG although for very long PEG chains (MW of 10,000 g/mol) retention increases again. After filtration, the membranes with PEG added showed a lower relative flux reduction that decreases for increasing MW of the added PEGs. Fil: Méndez, Mercedes Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina Fil: Romero, Analía Irma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina Fil: Rajal, Verónica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina Fil: Castro Vidaurre, Elza Fani. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina Fil: Calvo, José I.. Universidad de Valladolid. Facultad de Ciencias; España Fil: Palacio, Laura. Universidad de Valladolid. Facultad de Ciencias; España Fil: Hernandez, Antonio. Universidad de Valladolid. Facultad de Ciencias; España John Wiley & Sons Inc http://hdl.handle.net/11336/129426 Méndez, Mercedes Liliana; Romero, Analía Irma; Rajal, Verónica Beatriz; Castro Vidaurre, Elza Fani; Calvo, José I.; et al.; Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols; John Wiley & Sons Inc; Polymer Engineering and Science; 54; 5; 4-2013; 1211-1221 0032-3888 CONICET Digital CONICET |
| spellingShingle | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols Méndez, Mercedes Liliana polyethersulphone membranes ultrafiltration membranes modified membranes polyethylene glycol https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| status_str | publishedVersion |
| title | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| title_full | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| title_fullStr | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| title_full_unstemmed | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| title_short | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| title_sort | Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols |
| topic | polyethersulphone membranes ultrafiltration membranes modified membranes polyethylene glycol https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| topic_facet | polyethersulphone membranes ultrafiltration membranes modified membranes polyethylene glycol https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| url | http://hdl.handle.net/11336/129426 |