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. 2015 Sep 21;6:8313. doi: 10.1038/ncomms9313

Figure 3. Thermo-mechanical properties of SRT.

Figure 3

(a) Thermal gravimetric analysis (TGA) from RT up to 900 °C. Following water evaporation, SRT remain stable until ca. 250 °C. (b) DSC curves for hydrated (blue) and dry (red) samples. When hydrated, the heat flow was measured from RT to 60 °C. Under dry conditions, a first cycle (not shown) was ramped up to 120 °C, to remove residual water and subsequent cycles were ramped up to 120 °C (cycle 2), 170 °C (cycle 3) and 250 °C (cycle 4). Exothermic peaks at 137 °C and 151 °C were reproducible from cycle to cycle. The exothermic peak at 220 °C is attributed to β-sheet melting. (c) Reduced elastic modulus (Er) measured by high-temperature indentation using a temperature-ramping stage under both hydrated (blue) and dry (red) conditions.