Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds
The production of scaffolds for bone tissue applications is requiring a combination of physical and biological properties, which are depending on the materials morphology and pro-cessing conditions during the production process. The aim of the paper is the investigation of rheological behaviour of p...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/169278 |
| _version_ | 1826117534357651456 |
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| author | Daskalakis, Evangelos Hassan, Mohamed H. Omar, Abdalla M. Cooper, Glen Weightman, Andrew Bartolo, Paulo |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Daskalakis, Evangelos Hassan, Mohamed H. Omar, Abdalla M. Cooper, Glen Weightman, Andrew Bartolo, Paulo |
| author_sort | Daskalakis, Evangelos |
| collection | NTU |
| description | The production of scaffolds for bone tissue applications is requiring a combination of physical and biological properties, which are depending on the materials morphology and pro-cessing conditions during the production process. The aim of the paper is the investigation of rheological behaviour of polymer and composite blends regularly used for the production of scaffolds for bone tissue applications with the use of additive manufacturing. Poly-ε-caprolactone (PCL), hydroxyapatite (HA), β-tri-calcium phosphate (TCP) and Bioglass 45S5 blends containing different ceramic concentrations (10 wt%, 15 wt% and 20 wt%) were prepared with the use of melt blending procedure and investigated with the use of oscillation and rotational rheology tests. Results are showing that all blends are presenting viscoelastic behaviour with higher viscous modulus, compared with elastic modulus for low frequencies, with this difference reducing while the frequency is increasing. All blends are presenting shear-thinning behaviour suitable for use with additive manufacturing methods. Viscous and elastic modulus are increasing by adding ceramic particles. Results are presenting that PCL/HA blends of the same material concentration are presenting higher elastic modulus properties compared with the other blends, while PCL/Bioglass blends are presenting lower loss factor, lower relaxation time and lower shear viscosity making them easier to handle during the printing procedure. |
| first_indexed | 2024-10-01T04:29:09Z |
| format | Journal Article |
| id | ntu-10356/169278 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:29:09Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1692782023-07-12T15:37:07Z Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds Daskalakis, Evangelos Hassan, Mohamed H. Omar, Abdalla M. Cooper, Glen Weightman, Andrew Bartolo, Paulo School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering Additive Manufacturing Polymer-Ceramic Blends The production of scaffolds for bone tissue applications is requiring a combination of physical and biological properties, which are depending on the materials morphology and pro-cessing conditions during the production process. The aim of the paper is the investigation of rheological behaviour of polymer and composite blends regularly used for the production of scaffolds for bone tissue applications with the use of additive manufacturing. Poly-ε-caprolactone (PCL), hydroxyapatite (HA), β-tri-calcium phosphate (TCP) and Bioglass 45S5 blends containing different ceramic concentrations (10 wt%, 15 wt% and 20 wt%) were prepared with the use of melt blending procedure and investigated with the use of oscillation and rotational rheology tests. Results are showing that all blends are presenting viscoelastic behaviour with higher viscous modulus, compared with elastic modulus for low frequencies, with this difference reducing while the frequency is increasing. All blends are presenting shear-thinning behaviour suitable for use with additive manufacturing methods. Viscous and elastic modulus are increasing by adding ceramic particles. Results are presenting that PCL/HA blends of the same material concentration are presenting higher elastic modulus properties compared with the other blends, while PCL/Bioglass blends are presenting lower loss factor, lower relaxation time and lower shear viscosity making them easier to handle during the printing procedure. Published version This project has been supported by the University of Manchester and the Engineering and Physical Sciences Research Council (EPSRC) of the UK, the Global Challenges Research Fund (GCRF), grant number EP/R01513/1. 2023-07-11T02:40:04Z 2023-07-11T02:40:04Z 2023 Journal Article Daskalakis, E., Hassan, M. H., Omar, A. M., Cooper, G., Weightman, A. & Bartolo, P. (2023). Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds. Journal of Materials Research and Technology, 24, 3670-3682. https://dx.doi.org/10.1016/j.jmrt.2023.03.231 2238-7854 https://hdl.handle.net/10356/169278 10.1016/j.jmrt.2023.03.231 2-s2.0-85152617575 24 3670 3682 en Journal of Materials Research and Technology © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Mechanical engineering Additive Manufacturing Polymer-Ceramic Blends Daskalakis, Evangelos Hassan, Mohamed H. Omar, Abdalla M. Cooper, Glen Weightman, Andrew Bartolo, Paulo Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title | Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title_full | Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title_fullStr | Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title_full_unstemmed | Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title_short | Rheological behaviour of different composite materials for additive manufacturing of 3D bone scaffolds |
| title_sort | rheological behaviour of different composite materials for additive manufacturing of 3d bone scaffolds |
| topic | Engineering::Mechanical engineering Additive Manufacturing Polymer-Ceramic Blends |
| url | https://hdl.handle.net/10356/169278 |
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