Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source
This study aimed to prepare blends of natural polymers of TPS with PBAT by reactive extrusion with irradiation process, using the plasticizers (castor oil and glycerol) to evaluate the thermal and chemical properties. The blends were submitted to the irradiation process using a Cobalt-60 source at a...
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2022-09-01
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| Series: | Brazilian Journal of Radiation Sciences |
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| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2046 |
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| author | Dione Pereira de Castro Leonardo Gondim de Andrade e Silva |
| author_facet | Dione Pereira de Castro Leonardo Gondim de Andrade e Silva |
| author_sort | Dione Pereira de Castro |
| collection | DOAJ |
| description | This study aimed to prepare blends of natural polymers of TPS with PBAT by reactive extrusion with irradiation process, using the plasticizers (castor oil and glycerol) to evaluate the thermal and chemical properties. The blends were submitted to the irradiation process using a Cobalt-60 source at a 25 kGy dose and then characterized by FTIR and DSC analysis. According to the results obtained in the FTIR tests, the blends did not undergo chemical changes during the irradiation process and, thus, maintained their properties. In the DSC tests, it was observed that the blends F2 (castor oil) and F3 (castor oil and TWEEN® 80) showed higher values of heat flow for degradation than the samples F0 (glycerol) and F1 (glycerol and TWEEN® 80), probably due to the chemical interaction of castor oil and its constituents. There was no thermal variation in the irradiation process between blends F0 and F1 or F2 and F3. It was concluded that it is feasible to replace castor oil with glycerol in TPS/PBAT blends, and the irradiation using a Cobalt-60 source, not changed the final properties analyzed. |
| format | Article |
| id | doaj-art-95ae757a489a484e9c3c9a9fcc7c41c7 |
| institution | DOAJ |
| issn | 2319-0612 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj-art-95ae757a489a484e9c3c9a9fcc7c41c72025-08-20T03:13:30ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122022-09-0110310.15392/bjrs.v10i3.20461664Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 sourceDione Pereira de Castro0Leonardo Gondim de Andrade e Silva1IPEN-CNENIPEN-CNENThis study aimed to prepare blends of natural polymers of TPS with PBAT by reactive extrusion with irradiation process, using the plasticizers (castor oil and glycerol) to evaluate the thermal and chemical properties. The blends were submitted to the irradiation process using a Cobalt-60 source at a 25 kGy dose and then characterized by FTIR and DSC analysis. According to the results obtained in the FTIR tests, the blends did not undergo chemical changes during the irradiation process and, thus, maintained their properties. In the DSC tests, it was observed that the blends F2 (castor oil) and F3 (castor oil and TWEEN® 80) showed higher values of heat flow for degradation than the samples F0 (glycerol) and F1 (glycerol and TWEEN® 80), probably due to the chemical interaction of castor oil and its constituents. There was no thermal variation in the irradiation process between blends F0 and F1 or F2 and F3. It was concluded that it is feasible to replace castor oil with glycerol in TPS/PBAT blends, and the irradiation using a Cobalt-60 source, not changed the final properties analyzed.https://bjrs.org.br/revista/index.php/REVISTA/article/view/2046biodegradable polymersblendsirradiation process |
| spellingShingle | Dione Pereira de Castro Leonardo Gondim de Andrade e Silva Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source Brazilian Journal of Radiation Sciences biodegradable polymers blends irradiation process |
| title | Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source |
| title_full | Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source |
| title_fullStr | Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source |
| title_full_unstemmed | Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source |
| title_short | Thermal degradation and spectroscopy characterizations of TPS/PBAT blends irradiated by Cobalt-60 source |
| title_sort | thermal degradation and spectroscopy characterizations of tps pbat blends irradiated by cobalt 60 source |
| topic | biodegradable polymers blends irradiation process |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2046 |
| work_keys_str_mv | AT dionepereiradecastro thermaldegradationandspectroscopycharacterizationsoftpspbatblendsirradiatedbycobalt60source AT leonardogondimdeandradeesilva thermaldegradationandspectroscopycharacterizationsoftpspbatblendsirradiatedbycobalt60source |