Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/polym11111890 http://hdl.handle.net/11449/199713 |
Resumo: | Resins of polyurethane were prepared from vegetable oils (crambe and castor) and modified by adding green corrosion inhibitor (condensed tannin). The oils were characterized by gas chromatography with flame-ionization detection (GC-FID), attenuated total reflectance Fourier transform infrared spectroscopy (FTIR-ATR) and thermogravimetric analysis (TGA). The reaction was monitored by characterizing the intermediate products (polyester and prepolymer). The polyester was characterized by solubility in methanol, acidity index, hydroxyl groups and FTIR-ATR, and the prepolymer was characterized by solid content, solvent content, isocyanate (NCO) groups and FTIR-ATR. The formation of PU resins was confirmed by FTIR-ATR and TGA, and the presence of tannin particles incorporated in the coating can be observed by optical microscopy (OM). The absence of the band attributed to NCO in FTIR-ATR spectra of the resins confirmed the complete reaction between polyester and prepolymer. The OM observation and a video demonstrate that Polyurethane (PU)-modified with condensed tannin resin presents self-healing effect, probably through the formation of new hydrogen bonds when in contact with deionized water. Therefore, these results open possibilities for new synthetic routes aiming at improving the very important self-healing property for protecting metals and their alloys against corrosion, extending significantly the metallic materials lifetime as previously demonstrated by our group. |
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Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing propertyCastor oilCondensed tanninCondensed tannin-modified PU resinCrambe oilPolyurethane resinsSelf-healingResins of polyurethane were prepared from vegetable oils (crambe and castor) and modified by adding green corrosion inhibitor (condensed tannin). The oils were characterized by gas chromatography with flame-ionization detection (GC-FID), attenuated total reflectance Fourier transform infrared spectroscopy (FTIR-ATR) and thermogravimetric analysis (TGA). The reaction was monitored by characterizing the intermediate products (polyester and prepolymer). The polyester was characterized by solubility in methanol, acidity index, hydroxyl groups and FTIR-ATR, and the prepolymer was characterized by solid content, solvent content, isocyanate (NCO) groups and FTIR-ATR. The formation of PU resins was confirmed by FTIR-ATR and TGA, and the presence of tannin particles incorporated in the coating can be observed by optical microscopy (OM). The absence of the band attributed to NCO in FTIR-ATR spectra of the resins confirmed the complete reaction between polyester and prepolymer. The OM observation and a video demonstrate that Polyurethane (PU)-modified with condensed tannin resin presents self-healing effect, probably through the formation of new hydrogen bonds when in contact with deionized water. Therefore, these results open possibilities for new synthetic routes aiming at improving the very important self-healing property for protecting metals and their alloys against corrosion, extending significantly the metallic materials lifetime as previously demonstrated by our group.Department of Physical-chemistry Institute of Chemistry São Paulo State University (UNESP), PO Box 355Department of General and Inorganic Chemistry Institute of Chemistry São Paulo State University (UNESP), PO Box 355Department of Physical-chemistry Institute of Chemistry São Paulo State University (UNESP), PO Box 355Department of General and Inorganic Chemistry Institute of Chemistry São Paulo State University (UNESP), PO Box 355Universidade Estadual Paulista (Unesp)Nardeli, Jéssica Verger [UNESP]Fugivara, Cecílio Sadao [UNESP]Pinto, Elaine Ruzgus Pereira [UNESP]Polito, Wagner Luiz [UNESP]Messaddeq, Younes [UNESP]Ribeiro, Sidney José Lima [UNESP]Benedetti, Assis Vicente [UNESP]2020-12-12T01:47:14Z2020-12-12T01:47:14Z2019-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/polym11111890Polymers, v. 11, n. 11, 2019.2073-4360http://hdl.handle.net/11449/19971310.3390/polym111118902-s2.0-85075568160Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolymersinfo:eu-repo/semantics/openAccess2021-10-23T09:06:18Zoai:repositorio.unesp.br:11449/199713Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:43:54.265587Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
title |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
spellingShingle |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property Nardeli, Jéssica Verger [UNESP] Castor oil Condensed tannin Condensed tannin-modified PU resin Crambe oil Polyurethane resins Self-healing |
title_short |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
title_full |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
title_fullStr |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
title_full_unstemmed |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
title_sort |
Preparation of polyurethane monolithic resins and modification with a condensed tannin-yielding self-healing property |
author |
Nardeli, Jéssica Verger [UNESP] |
author_facet |
Nardeli, Jéssica Verger [UNESP] Fugivara, Cecílio Sadao [UNESP] Pinto, Elaine Ruzgus Pereira [UNESP] Polito, Wagner Luiz [UNESP] Messaddeq, Younes [UNESP] Ribeiro, Sidney José Lima [UNESP] Benedetti, Assis Vicente [UNESP] |
author_role |
author |
author2 |
Fugivara, Cecílio Sadao [UNESP] Pinto, Elaine Ruzgus Pereira [UNESP] Polito, Wagner Luiz [UNESP] Messaddeq, Younes [UNESP] Ribeiro, Sidney José Lima [UNESP] Benedetti, Assis Vicente [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Nardeli, Jéssica Verger [UNESP] Fugivara, Cecílio Sadao [UNESP] Pinto, Elaine Ruzgus Pereira [UNESP] Polito, Wagner Luiz [UNESP] Messaddeq, Younes [UNESP] Ribeiro, Sidney José Lima [UNESP] Benedetti, Assis Vicente [UNESP] |
dc.subject.por.fl_str_mv |
Castor oil Condensed tannin Condensed tannin-modified PU resin Crambe oil Polyurethane resins Self-healing |
topic |
Castor oil Condensed tannin Condensed tannin-modified PU resin Crambe oil Polyurethane resins Self-healing |
description |
Resins of polyurethane were prepared from vegetable oils (crambe and castor) and modified by adding green corrosion inhibitor (condensed tannin). The oils were characterized by gas chromatography with flame-ionization detection (GC-FID), attenuated total reflectance Fourier transform infrared spectroscopy (FTIR-ATR) and thermogravimetric analysis (TGA). The reaction was monitored by characterizing the intermediate products (polyester and prepolymer). The polyester was characterized by solubility in methanol, acidity index, hydroxyl groups and FTIR-ATR, and the prepolymer was characterized by solid content, solvent content, isocyanate (NCO) groups and FTIR-ATR. The formation of PU resins was confirmed by FTIR-ATR and TGA, and the presence of tannin particles incorporated in the coating can be observed by optical microscopy (OM). The absence of the band attributed to NCO in FTIR-ATR spectra of the resins confirmed the complete reaction between polyester and prepolymer. The OM observation and a video demonstrate that Polyurethane (PU)-modified with condensed tannin resin presents self-healing effect, probably through the formation of new hydrogen bonds when in contact with deionized water. Therefore, these results open possibilities for new synthetic routes aiming at improving the very important self-healing property for protecting metals and their alloys against corrosion, extending significantly the metallic materials lifetime as previously demonstrated by our group. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-01 2020-12-12T01:47:14Z 2020-12-12T01:47:14Z |
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/10.3390/polym11111890 Polymers, v. 11, n. 11, 2019. 2073-4360 http://hdl.handle.net/11449/199713 10.3390/polym11111890 2-s2.0-85075568160 |
url |
http://dx.doi.org/10.3390/polym11111890 http://hdl.handle.net/11449/199713 |
identifier_str_mv |
Polymers, v. 11, n. 11, 2019. 2073-4360 10.3390/polym11111890 2-s2.0-85075568160 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Polymers |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808129110102245376 |