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Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone
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| Veröffentlicht in: | Scientific reports Bd. 7.2017, Art.-Nr. 20, insgesamt 7 Seiten |
|---|---|
| Personen und Körperschaften: | , , , , |
| Titel: | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone/ I. V. Okulov, J. Weißmüller & J. Markmann |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
02 February 2017
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| Gesamtaufnahme: |
: Scientific reports, Bd. 7.2017, Art.-Nr. 20, insgesamt 7 Seiten
, volume:7 |
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| 520 | |a The long-term performance of orthopedic implants depends crucially on a close match between the mechanical behavior of bone and of the implant material. Yet, the present man-made materials with the required biocompatibility and strength are substantially stiffer than bone. This mismatch results in stress shielding, which can lead to the loss of bone mass and may even lead to a revision surgery. Here we report a new materials design strategy towards metal-polymer composites that are based on constituents with established biocompatibility and that can be matched to bone. Ti-based nanoporous alloys, prepared by liquid-metal dealloying, are infiltrated with epoxy to form interpenetrating-phase nanocomposites. At up to 260 MPa, their yield strength is technologically interesting for a deformable light-weight material. More importantly, Young's modulus can be adjusted between 4.4 and 24 GPa, which affords matching to bone. As another parallel to bone, the strength of the composite materials is strain-rate dependent. These findings suggest that the novel composite materials may provide the basis for promising future implant materials. | ||
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| author | Okulov, Ilya, Weißmüller, Jörg, Markmann, Jürgen |
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| contents | The long-term performance of orthopedic implants depends crucially on a close match between the mechanical behavior of bone and of the implant material. Yet, the present man-made materials with the required biocompatibility and strength are substantially stiffer than bone. This mismatch results in stress shielding, which can lead to the loss of bone mass and may even lead to a revision surgery. Here we report a new materials design strategy towards metal-polymer composites that are based on constituents with established biocompatibility and that can be matched to bone. Ti-based nanoporous alloys, prepared by liquid-metal dealloying, are infiltrated with epoxy to form interpenetrating-phase nanocomposites. At up to 260 MPa, their yield strength is technologically interesting for a deformable light-weight material. More importantly, Young's modulus can be adjusted between 4.4 and 24 GPa, which affords matching to bone. As another parallel to bone, the strength of the composite materials is strain-rate dependent. These findings suggest that the novel composite materials may provide the basis for promising future implant materials. |
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| spelling | Okulov, Ilya 1987- VerfasserIn (DE-588)1068286237 (DE-627)820767344 (DE-576)427606292 aut, Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone I. V. Okulov, J. Weißmüller & J. Markmann, 02 February 2017, Illustrationen, Diagramme, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, The long-term performance of orthopedic implants depends crucially on a close match between the mechanical behavior of bone and of the implant material. Yet, the present man-made materials with the required biocompatibility and strength are substantially stiffer than bone. This mismatch results in stress shielding, which can lead to the loss of bone mass and may even lead to a revision surgery. Here we report a new materials design strategy towards metal-polymer composites that are based on constituents with established biocompatibility and that can be matched to bone. Ti-based nanoporous alloys, prepared by liquid-metal dealloying, are infiltrated with epoxy to form interpenetrating-phase nanocomposites. At up to 260 MPa, their yield strength is technologically interesting for a deformable light-weight material. More importantly, Young's modulus can be adjusted between 4.4 and 24 GPa, which affords matching to bone. As another parallel to bone, the strength of the composite materials is strain-rate dependent. These findings suggest that the novel composite materials may provide the basis for promising future implant materials., Weißmüller, Jörg 1959- VerfasserIn (DE-588)1051291577 (DE-627)785954856 (DE-576)406323356 aut, Markmann, Jürgen VerfasserIn (DE-588)1156300916 (DE-627)1018845143 (DE-576)502084766 aut, Technische Universität Hamburg Sonstige Körperschaft (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 oth, Technische Universität Hamburg Institut für Werkstoffphysik und Werkstofftechnologie Sonstige Körperschaft (DE-588)1138447617 (DE-627)896006336 (DE-576)492538816 oth, Enthalten in Scientific reports [London] : Macmillan Publishers Limited, part of Springer Nature, 2011 Bd. 7.2017, Art.-Nr. 20, insgesamt 7 Seiten Online-Ressource (DE-627)663366712 (DE-600)2615211-3 (DE-576)346641179 2045-2322 nnns, volume:7 year:2017, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024827 Resolving-System kostenfrei Volltext, https://doi.org/10.15480/882.1931 Resolving-System kostenfrei Volltext, http://hdl.handle.net/11420/1934 Resolving-System kostenfrei Volltext, https://doi.org/10.1038/s41598-017-00048-4 Verlag Volltext, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024827 LFER, LFER 2019-05-29T00:00:00Z |
| spellingShingle | Okulov, Ilya, Weißmüller, Jörg, Markmann, Jürgen, Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone, The long-term performance of orthopedic implants depends crucially on a close match between the mechanical behavior of bone and of the implant material. Yet, the present man-made materials with the required biocompatibility and strength are substantially stiffer than bone. This mismatch results in stress shielding, which can lead to the loss of bone mass and may even lead to a revision surgery. Here we report a new materials design strategy towards metal-polymer composites that are based on constituents with established biocompatibility and that can be matched to bone. Ti-based nanoporous alloys, prepared by liquid-metal dealloying, are infiltrated with epoxy to form interpenetrating-phase nanocomposites. At up to 260 MPa, their yield strength is technologically interesting for a deformable light-weight material. More importantly, Young's modulus can be adjusted between 4.4 and 24 GPa, which affords matching to bone. As another parallel to bone, the strength of the composite materials is strain-rate dependent. These findings suggest that the novel composite materials may provide the basis for promising future implant materials. |
| title | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone |
| title_auth | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone |
| title_full | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone I. V. Okulov, J. Weißmüller & J. Markmann |
| title_fullStr | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone I. V. Okulov, J. Weißmüller & J. Markmann |
| title_full_unstemmed | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone I. V. Okulov, J. Weißmüller & J. Markmann |
| title_in_hierarchy | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone / I. V. Okulov, J. Weißmüller & J. Markmann, |
| title_short | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone |
| title_sort | dealloying based interpenetrating phase nanocomposites matching the elastic behavior of human bone |
| title_unstemmed | Dealloying-based interpenetrating-phase nanocomposites matching the elastic behavior of human bone |
| url | http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024827, https://doi.org/10.15480/882.1931, http://hdl.handle.net/11420/1934, https://doi.org/10.1038/s41598-017-00048-4 |
| urn | urn:nbn:de:gbv:830-882.024827 |