Fig. 5. HSM of amorphous solid sample: (a) amorphous PAL at 100 °C, begin to appear with birefringence; (b) amorphous PAL at 250–270 °C, gradually begin to melt; (c) PAL–SUC CM at 85–95 °C; (d) PAL–TAR CM at 80–90 °C; (e) PAL–CIT CM at 95–105 °C; and (f) PAL–MAL CM at 85–100 °C.