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BY 4.0 license Open Access Published by De Gruyter Open Access December 21, 2020

Modelling the elastic mechanical properties of bioactive glass-derived scaffolds

  • Francesco Baino EMAIL logo and Elisa Fiume
From the journal Biomedical Glasses

Abstract

Porosity is known to play a pivotal role in dictating the functional properties of biomedical scaffolds, with special reference to mechanical performance. While compressive strength is relatively easy to be experimentally assessed even for brittle ceramic and glass foams, elastic properties are much more difficult to be reliably estimated. Therefore, describing and, hence, predicting the relationship between porosity and elastic properties based only on the constitutive parameters of the solid material is still a challenge. In this work, we quantitatively compare the predictive capability of a set of different models in describing, over a wide range of porosity, the elastic modulus (7 models), shear modulus (3 models) and Poisson’s ratio (7 models) of bioactive silicate glass-derived scaffolds produced by foam replication. For these types of biomedical materials, the porosity dependence of elastic and shear moduli follows a second-order power-law approximation, whereas the relationship between porosity and Poisson’s ratio is well fitted by a linear equation.

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Received: 2020-09-01
Revised: 2020-10-14
Accepted: 2020-11-21
Published Online: 2020-12-21

© 2020 Francesco Baino et al., published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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