The dyeing of fir powder, benzylated and ethylated Chinese fir powder with disperse dyes under high temperature and high pressure was studied.The dyeing performance was compared and their structure of dyed modified fir powders was characterized by infrared spectra ( IR) and scanning electron microscope ( SEM) .The re-sults show that the color shade of dyed modified fir powder was similar to that of dyed polyester fabric, and brighter than dyed unmodified fir powder, especially the benzylated fir powder was the most brilliant.Additionally, the dye concentration, dyeing time and chemical structu...
