Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide
A cycloolefin copolymer matrix was melt mixed with exfoliated graphite nanoplatelets (xGnP) and the resulting nanocomposites were foamed by supercritical carbon dioxide. The density of the obtained foams decreased with the foaming pressure. Moreover, xGnP limited the cell growth during the expansion...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology
2016-12-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0007313&mi=cd |
| _version_ | 1819135422644617216 |
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| author | A. Biani A. Dorigato W. Bonani M. Slouf A. Pegoretti |
| author_facet | A. Biani A. Dorigato W. Bonani M. Slouf A. Pegoretti |
| author_sort | A. Biani |
| collection | DOAJ |
| description | A cycloolefin copolymer matrix was melt mixed with exfoliated graphite nanoplatelets (xGnP) and the resulting nanocomposites were foamed by supercritical carbon dioxide. The density of the obtained foams decreased with the foaming pressure. Moreover, xGnP limited the cell growth during the expansion process thus reducing the cell diameter (from 1.08 to 0.22 mm with an XGnP amount of 10 wt% at 150 bar) and increasing the cell density (from 12 to 45 cells/mm2 with a nanofiller content of 10 wt% at 150 bar). Electron microscopy observations of foams evidenced exfoliation and orientation of the nanoplatelets along the cell walls. Quasi-static compressive tests and tensile creep tests on foams clearly indicated that xGnP improved the modulus (up to a factor of 10 for a xGnP content of 10 wt%) and the creep stability. |
| first_indexed | 2024-12-22T10:18:50Z |
| format | Article |
| id | doaj.art-0ea35081fbe24a14acc139d3275213e7 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-22T10:18:50Z |
| publishDate | 2016-12-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-0ea35081fbe24a14acc139d3275213e72022-12-21T18:29:41ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2016-12-01101297798910.3144/expresspolymlett.2016.91Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxideA. BianiA. DorigatoW. BonaniM. SloufA. PegorettiA cycloolefin copolymer matrix was melt mixed with exfoliated graphite nanoplatelets (xGnP) and the resulting nanocomposites were foamed by supercritical carbon dioxide. The density of the obtained foams decreased with the foaming pressure. Moreover, xGnP limited the cell growth during the expansion process thus reducing the cell diameter (from 1.08 to 0.22 mm with an XGnP amount of 10 wt% at 150 bar) and increasing the cell density (from 12 to 45 cells/mm2 with a nanofiller content of 10 wt% at 150 bar). Electron microscopy observations of foams evidenced exfoliation and orientation of the nanoplatelets along the cell walls. Quasi-static compressive tests and tensile creep tests on foams clearly indicated that xGnP improved the modulus (up to a factor of 10 for a xGnP content of 10 wt%) and the creep stability.http://www.expresspolymlett.com/letolt.php?file=EPL-0007313&mi=cdNanocompositesFoamsGraphene nanoplatelets |
| spellingShingle | A. Biani A. Dorigato W. Bonani M. Slouf A. Pegoretti Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide eXPRESS Polymer Letters Nanocomposites Foams Graphene nanoplatelets |
| title | Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| title_full | Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| title_fullStr | Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| title_full_unstemmed | Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| title_short | Mechanical behaviour of cyclic olefin copolymer/exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| title_sort | mechanical behaviour of cyclic olefin copolymer exfoliated graphite nanoplatelets nanocomposites foamed through supercritical carbon dioxide |
| topic | Nanocomposites Foams Graphene nanoplatelets |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0007313&mi=cd |
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