Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties
Porous PEEK structures with approximately 85% open porosity have been made using PEEK-OPTIMA® powder and a particulate leaching technique using porous, near-spherical, sodium chloride beads. A novel manufacturing approach is presented and compared with a traditional dry mixing method. Irrespective o...
| Main Authors: | , |
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| Format: | Article |
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Elsevier
2015
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| Online Access: | https://eprints.nottingham.ac.uk/34449/ |
| _version_ | 1848794856481095680 |
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| author | Siddiq, Abdur R. Kennedy, Andrew R. |
| author_facet | Siddiq, Abdur R. Kennedy, Andrew R. |
| author_sort | Siddiq, Abdur R. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Porous PEEK structures with approximately 85% open porosity have been made using PEEK-OPTIMA® powder and a particulate leaching technique using porous, near-spherical, sodium chloride beads. A novel manufacturing approach is presented and compared with a traditional dry mixing method. Irrespective of the method used, the use of near-spherical beads with a fairly narrow size range results in uniform pore structures. However the integration, by tapping, of fine PEEK into a pre-existing network salt beads, followed by compaction and “sintering”, produces porous structures with excellent repeatability and homogeneity of density; more uniform pore and strut sizes; an improved and predictable level of connectivity via the formation of “windows” between the cells; faster salt removal rates and lower levels of residual salt. Although tapped samples show a compressive yield stress N1 MPa and stiffness N30 MPa for samples with 84% porosity, the presence of windows in the cell walls means that tapped structures show lower strengths and lower stiffnesses than equivalent structures made by mixing. |
| first_indexed | 2025-11-14T19:22:50Z |
| format | Article |
| id | nottingham-34449 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:22:50Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-344492020-05-04T16:59:36Z https://eprints.nottingham.ac.uk/34449/ Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties Siddiq, Abdur R. Kennedy, Andrew R. Porous PEEK structures with approximately 85% open porosity have been made using PEEK-OPTIMA® powder and a particulate leaching technique using porous, near-spherical, sodium chloride beads. A novel manufacturing approach is presented and compared with a traditional dry mixing method. Irrespective of the method used, the use of near-spherical beads with a fairly narrow size range results in uniform pore structures. However the integration, by tapping, of fine PEEK into a pre-existing network salt beads, followed by compaction and “sintering”, produces porous structures with excellent repeatability and homogeneity of density; more uniform pore and strut sizes; an improved and predictable level of connectivity via the formation of “windows” between the cells; faster salt removal rates and lower levels of residual salt. Although tapped samples show a compressive yield stress N1 MPa and stiffness N30 MPa for samples with 84% porosity, the presence of windows in the cell walls means that tapped structures show lower strengths and lower stiffnesses than equivalent structures made by mixing. Elsevier 2015-02-01 Article PeerReviewed Siddiq, Abdur R. and Kennedy, Andrew R. (2015) Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties. Materials Science and Engineering: C, 47 . pp. 180-188. ISSN 0928-4931 http://www.sciencedirect.com/science/article/pii/S0928493114007450 doi:10.1016/j.msec.2014.11.044 doi:10.1016/j.msec.2014.11.044 |
| spellingShingle | Siddiq, Abdur R. Kennedy, Andrew R. Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title | Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title_full | Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title_fullStr | Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title_full_unstemmed | Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title_short | Porous poly-ether ether ketone (PEEK) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| title_sort | porous poly-ether ether ketone (peek) manufactured by a novel powder route using near-spherical salt bead porogens: characterisation and mechanical properties |
| url | https://eprints.nottingham.ac.uk/34449/ https://eprints.nottingham.ac.uk/34449/ https://eprints.nottingham.ac.uk/34449/ |