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. 2016 Feb 6;6(1):20150070. doi: 10.1098/rsfs.2015.0070

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© 2015 The Author(s)

Published by the Royal Society. All rights reserved.

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Figure 7. — Local mechanical properties of mineralized matrices. (a–e) Representative strain maps of (a) an unmineralized collagen matrix, (b) an ungraded SBF + Fet-mineralized collagen matrix, (c) an ungraded SBF mineralized collagen matrix, (d) a graded SBF + Fet-mineralized collagen matrix and (e) a graded SBF mineralized collagen matrix. The frames shown for each sample were chosen such that the average strain in the frame was constant. The local strain analysis indicated that ungraded matrices expressed no strain field gradients. Strain was relatively constant along the lengths of unmineralized and ungraded samples. Strain decreased with increasing mineral content in the SBF + Fet group. Strain increased with increasing mineral content in the SBF group. (f) The average secant modulus as a function of position is shown for graded SBF and SBF + Fet scaffolds. Modulus increased with increasing mineral in the SBF + Fet group. Modulus decreased with increasing mineral in the SBF group. (Online version in colour.)