Curcumin is a phenolic compound, and its absorption peak of benzene ring will appear in the range of 1600 cm-1 ~ 1550 cm-1, and the vibration of C = O will appear in the range of 1660 cm-1 ~ 1610 cm-1. The characteristic peak at 3293.1 cm-1 corresponds to the stretching vibration of the phenolic hydroxyl group of curcumin, and the characteristic peak does not move obviously in the figure, which shows that curcumin is successfully loaded.

Curcumin is a phenolic compound, and its absorption peak of benzene ring will appear in the range of 1600 cm-1 ~ 1550 cm-1, and the vibration of C = O will appear in the range of 1660 cm-1 ~ 1610 cm-1. The characteristic peak at 3293.1 cm-1 corresponds to the stretching vibration of the phenolic hydroxyl group of curcumin, and the characteristic peak does not move obviously in the figure, which shows that curcumin is successfully loaded.