875815.fig.004
Figure 4: TGA curves at 10°C/min heating rate for various samples in nitrogen atmosphere: PMMA (a); BPM4 (b); BPM5 (c); BPM6 (d); BPM7 (e); BPM8 (f); BPM9 (g); BPM10 (h); BPM11 (i); BPM12 (l); BPM13 (m); BPM14 (n); BP44 (o).