Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , |
Tipo de documento: | Capítulo de livro |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/227434 |
Resumo: | Polyesters play an important rule within the group of engineering polymers and arelargely used in several occasions as protective coatings. In the field of electricalinsulation, there is a huge demand for thermal resistant materials and due to this fact, upuntil now, the macromolecules used have been aromatic in nature or are modified withsome heterocyclic structures, as imides or amides groups. Polyester-imides, a thermalresistant class of polymers with important application as electrical insulators, have itsresistance against the microorganisms few studied. These polymers (oligomers withmolar masses below 2.000 g mol-1) are synthesized by the esterification of terephthalicacid and derivates with bi and tri functional glycols. The imidization is conduced by thein-situ reaction of aromatic diamines and aromatic anhydrides. Polyester-imides aredissolved in a mixing of aromatics hydrocarbons and some phenol derivates between 25to 45% non volatiles, depending on the viscosity of the final varnishes. Copper wires areenameled in horizontal or vertical enameling machines. During the cure process, thepolymer achieves a not determinable degree of polymerization and due to the highlyaromatic nature of the polymer and also a residual phenol derivates still remaining in thereticulated polymer, an antifungal activity could be expected. To evaluate the eventualbiodegradation of such polymeric surfaces, a model was developed for studying fungalbiofilms in vitro. As growth was daily monitored, these studies aimed to analyze the great fungi potential present in biodeteration and biodegradation processes, based on the presence of a strongly and well defined biofilm, investigated by scanning electron microscopy. © 2011 by Nova Science Publishers, Inc. All Rights Reserved. |
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Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wiresBiodegradationFungal biofilmsPolyester-imidesPolymersPolyesters play an important rule within the group of engineering polymers and arelargely used in several occasions as protective coatings. In the field of electricalinsulation, there is a huge demand for thermal resistant materials and due to this fact, upuntil now, the macromolecules used have been aromatic in nature or are modified withsome heterocyclic structures, as imides or amides groups. Polyester-imides, a thermalresistant class of polymers with important application as electrical insulators, have itsresistance against the microorganisms few studied. These polymers (oligomers withmolar masses below 2.000 g mol-1) are synthesized by the esterification of terephthalicacid and derivates with bi and tri functional glycols. The imidization is conduced by thein-situ reaction of aromatic diamines and aromatic anhydrides. Polyester-imides aredissolved in a mixing of aromatics hydrocarbons and some phenol derivates between 25to 45% non volatiles, depending on the viscosity of the final varnishes. Copper wires areenameled in horizontal or vertical enameling machines. During the cure process, thepolymer achieves a not determinable degree of polymerization and due to the highlyaromatic nature of the polymer and also a residual phenol derivates still remaining in thereticulated polymer, an antifungal activity could be expected. To evaluate the eventualbiodegradation of such polymeric surfaces, a model was developed for studying fungalbiofilms in vitro. As growth was daily monitored, these studies aimed to analyze the great fungi potential present in biodeteration and biodegradation processes, based on the presence of a strongly and well defined biofilm, investigated by scanning electron microscopy. © 2011 by Nova Science Publishers, Inc. All Rights Reserved.Elantas Isolantes Elétricos do Brasil, 18520-000, Cerquilho-São Paulo, SPUniversidade Estadual Paulista Departamento de Bioquímica e Microbiologia, 199, 13506-900 Rio Claro, SPUniversidade Estadual Paulista Departamento de Bioquímica e Microbiologia, 199, 13506-900 Rio Claro, SPElantas Isolantes Elétricos do BrasilUniversidade Estadual Paulista (UNESP)Júnior, Giancarlo SonciniMarconato, José Carlos [UNESP]Martins Franchetti, Sandra Mara [UNESP]2022-04-29T07:13:17Z2022-04-29T07:13:17Z2011-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bookPart633-648Biofilms: Formation, Development and Properties, p. 633-648.http://hdl.handle.net/11449/2274342-s2.0-84892026778Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBiofilms: Formation, Development and Propertiesinfo:eu-repo/semantics/openAccess2022-04-29T07:13:17Zoai:repositorio.unesp.br:11449/227434Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:05:38.431084Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
title |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
spellingShingle |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires Júnior, Giancarlo Soncini Biodegradation Fungal biofilms Polyester-imides Polymers |
title_short |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
title_full |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
title_fullStr |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
title_full_unstemmed |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
title_sort |
Architecture of outgrowth fungal biofilms as a preliminary step in the biodegradation of polyester-imide enameled copper wires |
author |
Júnior, Giancarlo Soncini |
author_facet |
Júnior, Giancarlo Soncini Marconato, José Carlos [UNESP] Martins Franchetti, Sandra Mara [UNESP] |
author_role |
author |
author2 |
Marconato, José Carlos [UNESP] Martins Franchetti, Sandra Mara [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Elantas Isolantes Elétricos do Brasil Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Júnior, Giancarlo Soncini Marconato, José Carlos [UNESP] Martins Franchetti, Sandra Mara [UNESP] |
dc.subject.por.fl_str_mv |
Biodegradation Fungal biofilms Polyester-imides Polymers |
topic |
Biodegradation Fungal biofilms Polyester-imides Polymers |
description |
Polyesters play an important rule within the group of engineering polymers and arelargely used in several occasions as protective coatings. In the field of electricalinsulation, there is a huge demand for thermal resistant materials and due to this fact, upuntil now, the macromolecules used have been aromatic in nature or are modified withsome heterocyclic structures, as imides or amides groups. Polyester-imides, a thermalresistant class of polymers with important application as electrical insulators, have itsresistance against the microorganisms few studied. These polymers (oligomers withmolar masses below 2.000 g mol-1) are synthesized by the esterification of terephthalicacid and derivates with bi and tri functional glycols. The imidization is conduced by thein-situ reaction of aromatic diamines and aromatic anhydrides. Polyester-imides aredissolved in a mixing of aromatics hydrocarbons and some phenol derivates between 25to 45% non volatiles, depending on the viscosity of the final varnishes. Copper wires areenameled in horizontal or vertical enameling machines. During the cure process, thepolymer achieves a not determinable degree of polymerization and due to the highlyaromatic nature of the polymer and also a residual phenol derivates still remaining in thereticulated polymer, an antifungal activity could be expected. To evaluate the eventualbiodegradation of such polymeric surfaces, a model was developed for studying fungalbiofilms in vitro. As growth was daily monitored, these studies aimed to analyze the great fungi potential present in biodeteration and biodegradation processes, based on the presence of a strongly and well defined biofilm, investigated by scanning electron microscopy. © 2011 by Nova Science Publishers, Inc. All Rights Reserved. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-12-01 2022-04-29T07:13:17Z 2022-04-29T07:13:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/bookPart |
format |
bookPart |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Biofilms: Formation, Development and Properties, p. 633-648. http://hdl.handle.net/11449/227434 2-s2.0-84892026778 |
identifier_str_mv |
Biofilms: Formation, Development and Properties, p. 633-648. 2-s2.0-84892026778 |
url |
http://hdl.handle.net/11449/227434 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Biofilms: Formation, Development and Properties |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
633-648 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129017930317824 |