The DTG curves of these two samples display a big difference of sharp weight loss at ∼390C, attributed to the decomposition of F127 present in the nanospheres.
Furthermore, incorporation of F127 in PBFS-2 was confirmed by 1Hf13C CP/MAS NMR analysis (Figure 2d), showing signals at∼72 and 17 ppmthat correspond to the carbons in the methylene and methyl groups of the Pluronic F127.