Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete
The effect of atmospheric and low-pressure plasma modification on polypropylene (PP) microfibers was examined. Mechanical changes on the microfiber surfaces were observed using scanning electron microscopy (SEM). Next, wettability was measured using the packed-cell method. The fibers were applied i...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2023-07-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9159 |
| _version_ | 1797743586723233792 |
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| author | Jakub Ďureje Zdeněk Prošek Jan Trejbal Štěpán Potocký Radim Hlůžek |
| author_facet | Jakub Ďureje Zdeněk Prošek Jan Trejbal Štěpán Potocký Radim Hlůžek |
| author_sort | Jakub Ďureje |
| collection | DOAJ |
| description |
The effect of atmospheric and low-pressure plasma modification on polypropylene (PP) microfibers was examined. Mechanical changes on the microfiber surfaces were observed using scanning electron microscopy (SEM). Next, wettability was measured using the packed-cell method. The fibers were applied into a cement matrix containing micro-milled recycled concrete. Test specimens were made and then the dynamic modulus of elasticity was continuously measured. After 28 days were made in the test specimens central notches to a depth of 14 mm. Finally, bending tests were performed. From the results, the fracture energy of the composite material was calculated. It was proven that low-pressure plasma modification as well as atmospheric plasma modification increases the wettability of PP fibers with water. Furthermore, it was found that samples containing plasma-modified microfibers have a higher fracture energy compared to the same samples with fibers without plasma modification. Conversely, plasma modification had no effect on the dynamic modulus of elasticity.
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| first_indexed | 2024-03-12T14:57:35Z |
| format | Article |
| id | doaj.art-72f72fe7c35843eb9ffb07e7ca05fcb3 |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-03-12T14:57:35Z |
| publishDate | 2023-07-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-72f72fe7c35843eb9ffb07e7ca05fcb32023-08-14T12:14:27ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822023-07-014010.14311/APP.2023.40.0022Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concreteJakub Ďureje0Zdeněk Prošek1Jan Trejbal2Štěpán Potocký3Radim Hlůžek4Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Academy of Sciences, Institute of Physics, Cukrovarnická 10, 162 53 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech Republic The effect of atmospheric and low-pressure plasma modification on polypropylene (PP) microfibers was examined. Mechanical changes on the microfiber surfaces were observed using scanning electron microscopy (SEM). Next, wettability was measured using the packed-cell method. The fibers were applied into a cement matrix containing micro-milled recycled concrete. Test specimens were made and then the dynamic modulus of elasticity was continuously measured. After 28 days were made in the test specimens central notches to a depth of 14 mm. Finally, bending tests were performed. From the results, the fracture energy of the composite material was calculated. It was proven that low-pressure plasma modification as well as atmospheric plasma modification increases the wettability of PP fibers with water. Furthermore, it was found that samples containing plasma-modified microfibers have a higher fracture energy compared to the same samples with fibers without plasma modification. Conversely, plasma modification had no effect on the dynamic modulus of elasticity. https://ojs.cvut.cz/ojs/index.php/APP/article/view/9159atmospheric plasmaplasma modificationplasma treatmentpolypropylene microfiberoxygen plasmawettability |
| spellingShingle | Jakub Ďureje Zdeněk Prošek Jan Trejbal Štěpán Potocký Radim Hlůžek Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete Acta Polytechnica CTU Proceedings atmospheric plasma plasma modification plasma treatment polypropylene microfiber oxygen plasma wettability |
| title | Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete |
| title_full | Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete |
| title_fullStr | Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete |
| title_full_unstemmed | Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete |
| title_short | Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete |
| title_sort | treatment of polypropylene microfibers by atmospheric and low pressure plasma application to a reinforced cement composite containing recycled concrete |
| topic | atmospheric plasma plasma modification plasma treatment polypropylene microfiber oxygen plasma wettability |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9159 |
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