INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE

Detalhes bibliográficos
Autor(a) principal: Carvalho Mazzeu, Maria Alice
Data de Publicação: 2018
Outros Autores: Faria, Lohana Komorek, Baldan, Mauricio Ribeiro, Rezende, Mirabel Cerqueira [UNIFESP], Goncalves, Emerson Sarmento
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNIFESP
Texto Completo: https://repositorio.unifesp.br/handle/11600/53751
http://dx.doi.org/10.1590/0104-6632.20180351s20160201
Resumo: The aim of this work is to follow the structural variations of polyaniline (PAni) obtained by chemical oxidation on a pre-pilot scale, with different reaction times. Synthesis of PAni is well known, but when it is carried out on a pre-pilot scale, several factors can lead to structural changes and understanding these changes is important to improve controls on the synthesis process. The polymers formed were characterized by spectroscopic techniques (Raman spectroscopy, Fourier Transform Infrared - FTIR and UV-Visible). Degree of oxidation and yield were calculated for each reaction time. The analysis by FTIR, the calculated degree of oxidation and the yield showed significant changes in polymer structure at reaction times of 65 and 80 min. This result was attributed to the excessive oxidation of PAni, with the breaking of its polymer chain. The changes observed in the structure of PAni gave subsidies to the optimization of the process of obtaining polyaniline by chemical synthesis.
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spelling Carvalho Mazzeu, Maria AliceFaria, Lohana KomorekBaldan, Mauricio RibeiroRezende, Mirabel Cerqueira [UNIFESP]Goncalves, Emerson Sarmento2020-07-02T18:51:51Z2020-07-02T18:51:51Z2018Brazilian Journal Of Chemical Engineering. Sao Paulo, v. 35, n. 1, p. 123-130, 2018.0104-6632https://repositorio.unifesp.br/handle/11600/53751http://dx.doi.org/10.1590/0104-6632.20180351s20160201WOS000431180900012.pdf10.1590/0104-6632.20180351s20160201WOS:000431180900012The aim of this work is to follow the structural variations of polyaniline (PAni) obtained by chemical oxidation on a pre-pilot scale, with different reaction times. Synthesis of PAni is well known, but when it is carried out on a pre-pilot scale, several factors can lead to structural changes and understanding these changes is important to improve controls on the synthesis process. The polymers formed were characterized by spectroscopic techniques (Raman spectroscopy, Fourier Transform Infrared - FTIR and UV-Visible). Degree of oxidation and yield were calculated for each reaction time. The analysis by FTIR, the calculated degree of oxidation and the yield showed significant changes in polymer structure at reaction times of 65 and 80 min. This result was attributed to the excessive oxidation of PAni, with the breaking of its polymer chain. The changes observed in the structure of PAni gave subsidies to the optimization of the process of obtaining polyaniline by chemical synthesis.IndustrialFostering & Coordinat Inst IFI, DCTA, BR-12228901 Sao Jose Dos Campos, SP, BrazilVale Paraiba Univ UNIVAP, FEAU, BR-12228901 Sao Jose Dos Campos, SP, BrazilInst Aeronaut & Space IAE, DCTA, Mat Div, Phys Chem Characterizat Lab, BR-12228904 Sao Jose Dos Campos, SP, BrazilTechnol Inst Aeronaut ITA, DCTA, BR-12228900 Sao Jose Dos Campos, SP, BrazilNatl Inst Space Res INPE, Associated Lab Sensors, BR-12227010 Sao Jose Dos Campos, SP, BrazilFed Univ Sao Paulo UNIFESP, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP, BrazilFed Univ Sao Paulo UNIFESP, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP, BrazilWeb of Science123-130engBrazilian Soc Chemical EngBrazilian Journal Of Chemical EngineeringChemical reactorspectroscopysynthesisconducting polymerINFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALEinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSao Paulo351info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000431180900012.pdfapplication/pdf1763085${dspace.ui.url}/bitstream/11600/53751/1/WOS000431180900012.pdf7913b69c1dab895d24527ea3e48bfc83MD51open accessTEXTWOS000431180900012.pdf.txtWOS000431180900012.pdf.txtExtracted texttext/plain35681${dspace.ui.url}/bitstream/11600/53751/8/WOS000431180900012.pdf.txt8b0962ef1bd5b02d5290fc7052a127f6MD58open accessTHUMBNAILWOS000431180900012.pdf.jpgWOS000431180900012.pdf.jpgIM Thumbnailimage/jpeg6494${dspace.ui.url}/bitstream/11600/53751/10/WOS000431180900012.pdf.jpg689c5bf9e55a71559d684d0ce7112dc1MD510open access11600/537512023-06-05 19:09:26.315open accessoai:repositorio.unifesp.br:11600/53751Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:09:26Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false
dc.title.en.fl_str_mv INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
title INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
spellingShingle INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
Carvalho Mazzeu, Maria Alice
Chemical reactor
spectroscopy
synthesis
conducting polymer
title_short INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
title_full INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
title_fullStr INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
title_full_unstemmed INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
title_sort INFLUENCE OF REACTION TIME ON THE STRUCTURE OF POLYANILINE SYNTHESIZED ON A PRE-PILOT SCALE
author Carvalho Mazzeu, Maria Alice
author_facet Carvalho Mazzeu, Maria Alice
Faria, Lohana Komorek
Baldan, Mauricio Ribeiro
Rezende, Mirabel Cerqueira [UNIFESP]
Goncalves, Emerson Sarmento
author_role author
author2 Faria, Lohana Komorek
Baldan, Mauricio Ribeiro
Rezende, Mirabel Cerqueira [UNIFESP]
Goncalves, Emerson Sarmento
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Carvalho Mazzeu, Maria Alice
Faria, Lohana Komorek
Baldan, Mauricio Ribeiro
Rezende, Mirabel Cerqueira [UNIFESP]
Goncalves, Emerson Sarmento
dc.subject.eng.fl_str_mv Chemical reactor
spectroscopy
synthesis
conducting polymer
topic Chemical reactor
spectroscopy
synthesis
conducting polymer
description The aim of this work is to follow the structural variations of polyaniline (PAni) obtained by chemical oxidation on a pre-pilot scale, with different reaction times. Synthesis of PAni is well known, but when it is carried out on a pre-pilot scale, several factors can lead to structural changes and understanding these changes is important to improve controls on the synthesis process. The polymers formed were characterized by spectroscopic techniques (Raman spectroscopy, Fourier Transform Infrared - FTIR and UV-Visible). Degree of oxidation and yield were calculated for each reaction time. The analysis by FTIR, the calculated degree of oxidation and the yield showed significant changes in polymer structure at reaction times of 65 and 80 min. This result was attributed to the excessive oxidation of PAni, with the breaking of its polymer chain. The changes observed in the structure of PAni gave subsidies to the optimization of the process of obtaining polyaniline by chemical synthesis.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2020-07-02T18:51:51Z
dc.date.available.fl_str_mv 2020-07-02T18:51:51Z
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.citation.fl_str_mv Brazilian Journal Of Chemical Engineering. Sao Paulo, v. 35, n. 1, p. 123-130, 2018.
dc.identifier.uri.fl_str_mv https://repositorio.unifesp.br/handle/11600/53751
http://dx.doi.org/10.1590/0104-6632.20180351s20160201
dc.identifier.issn.none.fl_str_mv 0104-6632
dc.identifier.file.none.fl_str_mv WOS000431180900012.pdf
dc.identifier.doi.none.fl_str_mv 10.1590/0104-6632.20180351s20160201
dc.identifier.wos.none.fl_str_mv WOS:000431180900012
identifier_str_mv Brazilian Journal Of Chemical Engineering. Sao Paulo, v. 35, n. 1, p. 123-130, 2018.
0104-6632
WOS000431180900012.pdf
10.1590/0104-6632.20180351s20160201
WOS:000431180900012
url https://repositorio.unifesp.br/handle/11600/53751
http://dx.doi.org/10.1590/0104-6632.20180351s20160201
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.none.fl_str_mv Brazilian Journal Of Chemical Engineering
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 123-130
dc.coverage.none.fl_str_mv Sao Paulo
dc.publisher.none.fl_str_mv Brazilian Soc Chemical Eng
publisher.none.fl_str_mv Brazilian Soc Chemical Eng
dc.source.none.fl_str_mv reponame:Repositório Institucional da UNIFESP
instname:Universidade Federal de São Paulo (UNIFESP)
instacron:UNIFESP
instname_str Universidade Federal de São Paulo (UNIFESP)
instacron_str UNIFESP
institution UNIFESP
reponame_str Repositório Institucional da UNIFESP
collection Repositório Institucional da UNIFESP
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