Figure 6.
SEM pictures of aerogels printed from alginate 6 wt.% inks and different HA concentrations: (a) 0, (b) 8, (c) 16, and (d) 24 wt.%, after bioactivity tests. Aerogels were aged and crosslinked with GA vapor prior to being immersed in SBF medium. (e) EDX spectra of Alg 6%, HA 8%, CaCl2 1M1h GA aerogels after SBF treatment in an apatite granule region (Spectrum 1, left) and a background region (Spectrum 2, right), and representative of all the tested samples.