NDLI: Modelling the Mechanical Properties of Hydroxyapatite Scaffolds Produced by Digital Light Processing-Based Vat Photopolymerization

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Modelling the Mechanical Properties of Hydroxyapatite Scaffolds Produced by Digital Light Processing-Based Vat Photopolymerization

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Francesco Baino Martin Schwentenwein Enrica Verné
Abstract	Porosity is a key feature in dictating the overall performance of biomedical scaffolds, with special relevance to mechanical properties. Usually, compressive strength and elastic modulus are the main parameters used to determine the potential mechanical suitability of porous scaffolds for bone repair. However, their assessment may not be so easy from an experimental viewpoint and, especially if the porosity is high, so reliable for brittle bioceramic foams. Hence, assessing the relationship between porosity and mechanical properties based only on the constitutive parameters of the solid material is a challenging and important task to predict the scaffold performance for optimization during design. In this work, a set of equations was used to predict the compressive strength and elastic modulus of bone-like hydroxyapatite scaffolds produced by digital light processing-based vat photopolymerization (total porosity about 80 vol.%). The compressive strength was found to depend on total porosity, following a power-law approximation. The relationship between porosity and elastic modulus was well fitted by second-order power law, with relative density and computational models obtained by numerical simulations.
Related Links	https://www.mdpi.com/2571-6131/5/3/44
DOI	10.3390/ceramics5030044
Journal	Ceramics
Issue Number	44
Volume Number	5
e-ISSN	25716131
Language	English
Publisher	MDPI AG
Publisher Date	2022-01-01
Publisher Place	Switzerland
Access Restriction	Open
Subject Keyword	Technology Chemical Technology Hydroxyapatite Scaffold Additive Manufacturing Elastic Modulus Compressive Strength Bone Repair Chemical technology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Science

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