2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends
The full understanding of the mechanisms involved in the development of polymer blend microstructure during its processing has not yet been achieved; the understanding of blends composed by a highly elastic dispersed phase is even more indefinite. The proposal of this work is to analyze the deformat...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2018-12-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0009242&mi=cd |
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| _version_ | 1849407900011724800 |
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| author | P. S. Garcia R. F. Gouveia J. M. Maia C. H. Scuracchio S. A. Cruz |
| author_facet | P. S. Garcia R. F. Gouveia J. M. Maia C. H. Scuracchio S. A. Cruz |
| author_sort | P. S. Garcia |
| collection | DOAJ |
| description | The full understanding of the mechanisms involved in the development of polymer blend microstructure during its processing has not yet been achieved; the understanding of blends composed by a highly elastic dispersed phase is even more indefinite. The proposal of this work is to analyze the deformation behavior of a new system composed by a partially devulcanized rubber dispersed in polypropylene using 2D and 3D images, both as complementary tools. For this purpose, ground tire rubber (GTR) was partially devulcanized by microwave irradiation for different exposure periods. After this step, each treated rubber was incorporated into recycled PP. The molded blends were analyzed using effective tools as 2D and 3D images and rheological data. In general, the polymer blends exhibited refined microstructure, especially the blend composed of the most devulcanized rubber, even though they had high values of viscosity ratio (≥4). Based on the 3D images, it is clear that breakup mechanisms of the dispersed phase, like parallel breakup, have played an important role in the evolution of the blend’s microstructure, mainly in the region of higher shear rate during processing. However, in areas where the rubber is still vulcanized, the breakup may have been caused by erosion of its surface. |
| format | Article |
| id | doaj-art-b7fab2f49c814190849c79e3efeb92d8 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-b7fab2f49c814190849c79e3efeb92d82025-08-20T03:35:54ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2018-12-0112121047106010.3144/expresspolymlett.2018.922D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blendsP. S. GarciaR. F. GouveiaJ. M. MaiaC. H. ScuracchioS. A. CruzThe full understanding of the mechanisms involved in the development of polymer blend microstructure during its processing has not yet been achieved; the understanding of blends composed by a highly elastic dispersed phase is even more indefinite. The proposal of this work is to analyze the deformation behavior of a new system composed by a partially devulcanized rubber dispersed in polypropylene using 2D and 3D images, both as complementary tools. For this purpose, ground tire rubber (GTR) was partially devulcanized by microwave irradiation for different exposure periods. After this step, each treated rubber was incorporated into recycled PP. The molded blends were analyzed using effective tools as 2D and 3D images and rheological data. In general, the polymer blends exhibited refined microstructure, especially the blend composed of the most devulcanized rubber, even though they had high values of viscosity ratio (≥4). Based on the 3D images, it is clear that breakup mechanisms of the dispersed phase, like parallel breakup, have played an important role in the evolution of the blend’s microstructure, mainly in the region of higher shear rate during processing. However, in areas where the rubber is still vulcanized, the breakup may have been caused by erosion of its surface.http://www.expresspolymlett.com/letolt.php?file=EPL-0009242&mi=cdRecyclingPolymer BlendsRubberDevulcanizationMicrostructure |
| spellingShingle | P. S. Garcia R. F. Gouveia J. M. Maia C. H. Scuracchio S. A. Cruz 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends eXPRESS Polymer Letters Recycling Polymer Blends Rubber Devulcanization Microstructure |
| title | 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends |
| title_full | 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends |
| title_fullStr | 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends |
| title_full_unstemmed | 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends |
| title_short | 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends |
| title_sort | 2d and 3d imaging of the deformation behavior of partially devulcanized rubber polypropylene blends |
| topic | Recycling Polymer Blends Rubber Devulcanization Microstructure |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0009242&mi=cd |
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