Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites
Composites of Linear Low Density Polyethylene (LLDPE) and Graphene Nanoplatelets (GNPs) were processed using a twin screw extruder under different extrusion conditions. The effects of screw speed, feeder speed and GNP content on the electrical, thermal and mechanical properties of composites were in...
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| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , , , , |
| التنسيق: | article |
| منشور في: |
2016
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://dx.doi.org/10.1016/j.vacuum.2016.04.022 https://www.sciencedirect.com/science/article/pii/S0042207X16301105 http://hdl.handle.net/10576/43533 |
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| _version_ | 1857415085954170880 |
|---|---|
| author | P., Noorunnisa Khanam |
| author2 | AlMaadeed, M.A. Ouederni, M. Harkin-Jones, Eileen Mayoral, Beatriz Hamilton, Andrew Sun, Dan |
| author2_role | author author author author author author |
| author_facet | P., Noorunnisa Khanam AlMaadeed, M.A. Ouederni, M. Harkin-Jones, Eileen Mayoral, Beatriz Hamilton, Andrew Sun, Dan |
| author_role | author |
| dc.creator.none.fl_str_mv | P., Noorunnisa Khanam AlMaadeed, M.A. Ouederni, M. Harkin-Jones, Eileen Mayoral, Beatriz Hamilton, Andrew Sun, Dan |
| dc.date.none.fl_str_mv | 2016-04-22 2023-05-29T09:06:31Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.vacuum.2016.04.022 Khanam, P. N., AlMaadeed, M. A., Ouederni, M., Harkin-Jones, E., Mayoral, B., Hamilton, A., & Sun, D. (2016). Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites. Vacuum, 130, 63-71. 0042-207X https://www.sciencedirect.com/science/article/pii/S0042207X16301105 http://hdl.handle.net/10576/43533 63-71 130 1879-2715 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Melt processing Graphene nanoplatelets Mechanical properties Electrical properties |
| dc.title.none.fl_str_mv | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Composites of Linear Low Density Polyethylene (LLDPE) and Graphene Nanoplatelets (GNPs) were processed using a twin screw extruder under different extrusion conditions. The effects of screw speed, feeder speed and GNP content on the electrical, thermal and mechanical properties of composites were investigated. The inclusion of GNPs in the matrix improved the thermal stability and conductivity by 2.7% and 43%, respectively. The electrical conductivity improved from 10−11 to 10−5 S/m at 150 rpm due to the high thermal stability of the GNPs and the formation of phonon and charge carrier networks in the polymer matrix. Higher extruder speeds result in a better distribution of the GNPs in the matrix and a significant increase in thermal stability and thermal conductivity. However, this effect is not significant for the electrical conductivity and tensile strength. The addition of GNPs increased the viscosity of the polymer, which will lead to higher processing power requirements. Increasing the extruder speed led to a reduction in viscosity, which is due to thermal degradation and/or chain scission. Thus, while high speeds result in better dispersions, the speed needs to be optimized to prevent detrimental impacts on the properties. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_8e723125ceb25dd24b48b94a0db2a1d3 |
| identifier_str_mv | Khanam, P. N., AlMaadeed, M. A., Ouederni, M., Harkin-Jones, E., Mayoral, B., Hamilton, A., & Sun, D. (2016). Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites. Vacuum, 130, 63-71. 0042-207X 63-71 130 1879-2715 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/43533 |
| publishDate | 2016 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| spelling | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet compositesP., Noorunnisa KhanamAlMaadeed, M.A.Ouederni, M.Harkin-Jones, EileenMayoral, BeatrizHamilton, AndrewSun, DanMelt processingGraphene nanoplateletsMechanical propertiesElectrical propertiesComposites of Linear Low Density Polyethylene (LLDPE) and Graphene Nanoplatelets (GNPs) were processed using a twin screw extruder under different extrusion conditions. The effects of screw speed, feeder speed and GNP content on the electrical, thermal and mechanical properties of composites were investigated. The inclusion of GNPs in the matrix improved the thermal stability and conductivity by 2.7% and 43%, respectively. The electrical conductivity improved from 10−11 to 10−5 S/m at 150 rpm due to the high thermal stability of the GNPs and the formation of phonon and charge carrier networks in the polymer matrix. Higher extruder speeds result in a better distribution of the GNPs in the matrix and a significant increase in thermal stability and thermal conductivity. However, this effect is not significant for the electrical conductivity and tensile strength. The addition of GNPs increased the viscosity of the polymer, which will lead to higher processing power requirements. Increasing the extruder speed led to a reduction in viscosity, which is due to thermal degradation and/or chain scission. Thus, while high speeds result in better dispersions, the speed needs to be optimized to prevent detrimental impacts on the properties.This work was made possible by NPRP grant No. NPRP5-039-2-014 from the Qatar National Research Fund (A Member of The Qatar Foundation).Elsevier2023-05-29T09:06:31Z2016-04-22Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.vacuum.2016.04.022Khanam, P. N., AlMaadeed, M. A., Ouederni, M., Harkin-Jones, E., Mayoral, B., Hamilton, A., & Sun, D. (2016). Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites. Vacuum, 130, 63-71.0042-207Xhttps://www.sciencedirect.com/science/article/pii/S0042207X16301105http://hdl.handle.net/10576/4353363-711301879-2715enhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/435332024-07-23T13:53:25Z |
| spellingShingle | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites P., Noorunnisa Khanam Melt processing Graphene nanoplatelets Mechanical properties Electrical properties |
| status_str | publishedVersion |
| title | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| title_full | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| title_fullStr | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| title_full_unstemmed | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| title_short | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| title_sort | Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites |
| topic | Melt processing Graphene nanoplatelets Mechanical properties Electrical properties |
| url | http://dx.doi.org/10.1016/j.vacuum.2016.04.022 https://www.sciencedirect.com/science/article/pii/S0042207X16301105 http://hdl.handle.net/10576/43533 |