Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy
Main Author: | |
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Publication Date: | 2006 |
Other Authors: | , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1590/S0104-14282006000200013 http://hdl.handle.net/11449/29827 |
Summary: | The aim of this research is to study the biodegradation of a polyurethane derived from castor oil, which contains polyester segment in its molecular structure, thus becoming susceptible to the microorganisms attack. The biodegradation of polyurethane was tested in contact with microorganisms resulting from microbiological grease degrading agents, in appropriate liquid media, with a duration of 156 days. The study was done by using scanning electron microscopy (SEM), thermogravimetry (TG) and Fourier-transform infrared spectroscopy with accessory for attenuated total reflectance (FTIR-ATR). The results suggest that the degradation of polyurethane derived from castor oil occurs. TG curves are used in order to indicate the biodegradation, showing changes between the thermal behavior of the samples that were inoculated with microorganisms and control. In the FTIR-ATR spectra, there are detectable changes between the spectra of control and attacked specimens; this suggests that degradation occurs, with the decreased intensity of the absorption band at 1042 cm-1, corresponding to the esters links. |
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Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopyBiodegradationpolyurethanecastor oilthermogravimetryinfrared spectroscopyThe aim of this research is to study the biodegradation of a polyurethane derived from castor oil, which contains polyester segment in its molecular structure, thus becoming susceptible to the microorganisms attack. The biodegradation of polyurethane was tested in contact with microorganisms resulting from microbiological grease degrading agents, in appropriate liquid media, with a duration of 156 days. The study was done by using scanning electron microscopy (SEM), thermogravimetry (TG) and Fourier-transform infrared spectroscopy with accessory for attenuated total reflectance (FTIR-ATR). The results suggest that the degradation of polyurethane derived from castor oil occurs. TG curves are used in order to indicate the biodegradation, showing changes between the thermal behavior of the samples that were inoculated with microorganisms and control. In the FTIR-ATR spectra, there are detectable changes between the spectra of control and attacked specimens; this suggests that degradation occurs, with the decreased intensity of the absorption band at 1042 cm-1, corresponding to the esters links.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)USP Instituto de Química de São CarlosUNESP Instituto de BiociênciasUNESP Instituto de BiociênciasAssociação Brasileira de PolímerosUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Cangemi, José M.Claro Neto, SalvadorChierice, Gilberto O.Santos, Antonia M. dos [UNESP]2014-05-20T15:15:55Z2014-05-20T15:15:55Z2006-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article129-135application/pdfhttp://dx.doi.org/10.1590/S0104-14282006000200013Polímeros. Associação Brasileira de Polímeros, v. 16, n. 2, p. 129-135, 2006.0104-1428http://hdl.handle.net/11449/2982710.1590/S0104-14282006000200013S0104-14282006000200013S0104-14282006000200013.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolímeros0.7000,244info:eu-repo/semantics/openAccess2024-01-12T06:25:00Zoai:repositorio.unesp.br:11449/29827Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-12T06:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
title |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
spellingShingle |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy Cangemi, José M. Biodegradation polyurethane castor oil thermogravimetry infrared spectroscopy |
title_short |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
title_full |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
title_fullStr |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
title_full_unstemmed |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
title_sort |
Study of the biodegradation of a polymer derived from castor oil by scanning electron microscopy, thermogravimetry and infrared spectroscopy |
author |
Cangemi, José M. |
author_facet |
Cangemi, José M. Claro Neto, Salvador Chierice, Gilberto O. Santos, Antonia M. dos [UNESP] |
author_role |
author |
author2 |
Claro Neto, Salvador Chierice, Gilberto O. Santos, Antonia M. dos [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cangemi, José M. Claro Neto, Salvador Chierice, Gilberto O. Santos, Antonia M. dos [UNESP] |
dc.subject.por.fl_str_mv |
Biodegradation polyurethane castor oil thermogravimetry infrared spectroscopy |
topic |
Biodegradation polyurethane castor oil thermogravimetry infrared spectroscopy |
description |
The aim of this research is to study the biodegradation of a polyurethane derived from castor oil, which contains polyester segment in its molecular structure, thus becoming susceptible to the microorganisms attack. The biodegradation of polyurethane was tested in contact with microorganisms resulting from microbiological grease degrading agents, in appropriate liquid media, with a duration of 156 days. The study was done by using scanning electron microscopy (SEM), thermogravimetry (TG) and Fourier-transform infrared spectroscopy with accessory for attenuated total reflectance (FTIR-ATR). The results suggest that the degradation of polyurethane derived from castor oil occurs. TG curves are used in order to indicate the biodegradation, showing changes between the thermal behavior of the samples that were inoculated with microorganisms and control. In the FTIR-ATR spectra, there are detectable changes between the spectra of control and attacked specimens; this suggests that degradation occurs, with the decreased intensity of the absorption band at 1042 cm-1, corresponding to the esters links. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06-01 2014-05-20T15:15:55Z 2014-05-20T15:15:55Z |
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://dx.doi.org/10.1590/S0104-14282006000200013 Polímeros. Associação Brasileira de Polímeros, v. 16, n. 2, p. 129-135, 2006. 0104-1428 http://hdl.handle.net/11449/29827 10.1590/S0104-14282006000200013 S0104-14282006000200013 S0104-14282006000200013.pdf |
url |
http://dx.doi.org/10.1590/S0104-14282006000200013 http://hdl.handle.net/11449/29827 |
identifier_str_mv |
Polímeros. Associação Brasileira de Polímeros, v. 16, n. 2, p. 129-135, 2006. 0104-1428 10.1590/S0104-14282006000200013 S0104-14282006000200013 S0104-14282006000200013.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Polímeros 0.700 0,244 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
129-135 application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Polímeros |
publisher.none.fl_str_mv |
Associação Brasileira de Polímeros |
dc.source.none.fl_str_mv |
SciELO 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_ |
1797790272274300928 |