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. Author manuscript; available in PMC: 2016 Nov 14.
Published in final edited form as: J Mater Chem B. 2015 Sep 11;3(42):8314–8320. doi: 10.1039/C5TB01692D

Figure 1.

Figure 1

The weight and structural changes of the silk-vaterite microspheres after different thermal treatments: (a) The weight loss of the microspheres after thermal treatment when compared with the control (M-0). The original silk content inside the microspheres before thermal treatment was 10%, based on TGA curves of the particles from 0 to 800°C at 10 °C min−1 in a nitrogen gas with flow rate of 40 cm3min−1 (The curves are not shown). (b) FTIR spectra of the CaCO3 microspheres after different thermal treatments. The typical peaks of silk gradually decreased and almost disappeared following the increase of temperature and time while the peaks of vaterite keep stable in the processes.