Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/5075 https://doi.org/10.1016/j.eurpolymj.2006.04.002 |
Resumo: | Calix[4]pyrrole (1) was synthesized and characterized and this macrocycle was incorporated in polyacrylamide gels. The presence of meso-octamethyl-porphyrinogen inside of gel was checked using infrared spectroscopy, differential scanning calorimetry, and swelling studies. The swelling degree of these hydrogels in equilibrium with different electrolytes (NaCl, LiCl, KCl, CaCl2 and AlCl3) was measured in a concentration range 0.1-0.5 mol dm-3. Although no significant alterations in the swelling degree can be found for the different 1:1 electrolytes, when the cation charge of unsymmetrical electrolytes increases, the gel swells in a significant way. This swelling process is enhanced by the presence of calyx[4]pyrrole. The effect of alkaline hydrolysis of polaycrylamide-based hydrogels was also studied. The hydrolysed hydrogels collapse in the presence of the electrolytes; this behavior is dependent on the hydrolysis degree, electrolyte charge and calyx[4]pyrrole presence and concentration; the latter leads to polyacrylamide with tailor-made properties. |
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Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranesHydrogelsPolyacrylamideCalyx[4]pyrroleSwelling degreeHydrolysisCalix[4]pyrrole (1) was synthesized and characterized and this macrocycle was incorporated in polyacrylamide gels. The presence of meso-octamethyl-porphyrinogen inside of gel was checked using infrared spectroscopy, differential scanning calorimetry, and swelling studies. The swelling degree of these hydrogels in equilibrium with different electrolytes (NaCl, LiCl, KCl, CaCl2 and AlCl3) was measured in a concentration range 0.1-0.5 mol dm-3. Although no significant alterations in the swelling degree can be found for the different 1:1 electrolytes, when the cation charge of unsymmetrical electrolytes increases, the gel swells in a significant way. This swelling process is enhanced by the presence of calyx[4]pyrrole. The effect of alkaline hydrolysis of polaycrylamide-based hydrogels was also studied. The hydrolysed hydrogels collapse in the presence of the electrolytes; this behavior is dependent on the hydrolysis degree, electrolyte charge and calyx[4]pyrrole presence and concentration; the latter leads to polyacrylamide with tailor-made properties.http://www.sciencedirect.com/science/article/B6TWW-4K0FJT9-2/1/a2e10fed9f08e8248532610bc3e2bdcd2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/5075http://hdl.handle.net/10316/5075https://doi.org/10.1016/j.eurpolymj.2006.04.002engEuropean Polymer Journal. 42:9 (2006) 2059-2068Valente, Artur J. M.Sobral, Abílio J. F. N.Jiménez, AlfonsoPatachia, SílviaOliveira, Ana R. C. B.Lobo, Victor M. M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:49:04Zoai:estudogeral.uc.pt:10316/5075Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:29.140439Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
title |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
spellingShingle |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes Valente, Artur J. M. Hydrogels Polyacrylamide Calyx[4]pyrrole Swelling degree Hydrolysis |
title_short |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
title_full |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
title_fullStr |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
title_full_unstemmed |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
title_sort |
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-containing polyacrylamide membranes |
author |
Valente, Artur J. M. |
author_facet |
Valente, Artur J. M. Sobral, Abílio J. F. N. Jiménez, Alfonso Patachia, Sílvia Oliveira, Ana R. C. B. Lobo, Victor M. M. |
author_role |
author |
author2 |
Sobral, Abílio J. F. N. Jiménez, Alfonso Patachia, Sílvia Oliveira, Ana R. C. B. Lobo, Victor M. M. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Valente, Artur J. M. Sobral, Abílio J. F. N. Jiménez, Alfonso Patachia, Sílvia Oliveira, Ana R. C. B. Lobo, Victor M. M. |
dc.subject.por.fl_str_mv |
Hydrogels Polyacrylamide Calyx[4]pyrrole Swelling degree Hydrolysis |
topic |
Hydrogels Polyacrylamide Calyx[4]pyrrole Swelling degree Hydrolysis |
description |
Calix[4]pyrrole (1) was synthesized and characterized and this macrocycle was incorporated in polyacrylamide gels. The presence of meso-octamethyl-porphyrinogen inside of gel was checked using infrared spectroscopy, differential scanning calorimetry, and swelling studies. The swelling degree of these hydrogels in equilibrium with different electrolytes (NaCl, LiCl, KCl, CaCl2 and AlCl3) was measured in a concentration range 0.1-0.5 mol dm-3. Although no significant alterations in the swelling degree can be found for the different 1:1 electrolytes, when the cation charge of unsymmetrical electrolytes increases, the gel swells in a significant way. This swelling process is enhanced by the presence of calyx[4]pyrrole. The effect of alkaline hydrolysis of polaycrylamide-based hydrogels was also studied. The hydrolysed hydrogels collapse in the presence of the electrolytes; this behavior is dependent on the hydrolysis degree, electrolyte charge and calyx[4]pyrrole presence and concentration; the latter leads to polyacrylamide with tailor-made properties. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/5075 http://hdl.handle.net/10316/5075 https://doi.org/10.1016/j.eurpolymj.2006.04.002 |
url |
http://hdl.handle.net/10316/5075 https://doi.org/10.1016/j.eurpolymj.2006.04.002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
European Polymer Journal. 42:9 (2006) 2059-2068 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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