Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics
In order to study the influence of different sulfonation routes on its thermal and structural properties sulfonated polyaniline (SPAni) was prepared. FT-IR revealed that the formation of PAni salt or ring sulfonation depends on the route. UV-visible spectra pointed out that the level of the PAni pro...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2011-12-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000400007 |
| _version_ | 1819239403479891968 |
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| author | Luis Claudio Mendes Ana Paula Santiago Falco Magali Silveira Pinho Priscila Oliveira Marques |
| author_facet | Luis Claudio Mendes Ana Paula Santiago Falco Magali Silveira Pinho Priscila Oliveira Marques |
| author_sort | Luis Claudio Mendes |
| collection | DOAJ |
| description | In order to study the influence of different sulfonation routes on its thermal and structural properties sulfonated polyaniline (SPAni) was prepared. FT-IR revealed that the formation of PAni salt or ring sulfonation depends on the route. UV-visible spectra pointed out that the level of the PAni protonation was dependent on the sulfonation route. A new approach was given for TG/DTG and DSC results correlating different energy levels with the distinguished sulfonation routes. The TG/DTG degradation steps and the amount of the released material corroborated the structural differences of the polyanilines. For each DSC first regime of heating, a broad and intense peak (from -30 to 250 ºC) with different level of energy was noticed. That peak could be ascribed to the multiple relaxations and breaking of the PAni intra and inter hydrogen bonds after sulfonation. |
| first_indexed | 2024-12-23T13:51:34Z |
| format | Article |
| id | doaj.art-d23423908fe04f0c8e0c5ab64af94448 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-23T13:51:34Z |
| publishDate | 2011-12-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-d23423908fe04f0c8e0c5ab64af944482022-12-21T17:44:35ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392011-12-01144466471Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristicsLuis Claudio MendesAna Paula Santiago FalcoMagali Silveira PinhoPriscila Oliveira MarquesIn order to study the influence of different sulfonation routes on its thermal and structural properties sulfonated polyaniline (SPAni) was prepared. FT-IR revealed that the formation of PAni salt or ring sulfonation depends on the route. UV-visible spectra pointed out that the level of the PAni protonation was dependent on the sulfonation route. A new approach was given for TG/DTG and DSC results correlating different energy levels with the distinguished sulfonation routes. The TG/DTG degradation steps and the amount of the released material corroborated the structural differences of the polyanilines. For each DSC first regime of heating, a broad and intense peak (from -30 to 250 ºC) with different level of energy was noticed. That peak could be ascribed to the multiple relaxations and breaking of the PAni intra and inter hydrogen bonds after sulfonation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000400007SPAniTG/DTGDSCFT-IRUV-vis |
| spellingShingle | Luis Claudio Mendes Ana Paula Santiago Falco Magali Silveira Pinho Priscila Oliveira Marques Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics Materials Research SPAni TG/DTG DSC FT-IR UV-vis |
| title | Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics |
| title_full | Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics |
| title_fullStr | Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics |
| title_full_unstemmed | Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics |
| title_short | Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics |
| title_sort | sulfonated polyaniline influence of sulfonation routes on its thermal and structural characteristics |
| topic | SPAni TG/DTG DSC FT-IR UV-vis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000400007 |
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