Dyeing of Polyester Using Crude Disperse Dyes by Nanoemulsion Technique

In this study three types of nanodisperse dyes were prepared using oil in water nanoemulsions and applied on microdenier polyester fabric. Nanoemulsions were prepared by three methods: ultrasonication, phase inversion composition and spontaneous emulsification process. Nano scale level emulsion was obtained by all the three methods evidenced by Dynamic Light Scattering method. The dyeing characteristics of micro denier polyester dyed with crude disperse dyes using these nanoemulsions and that dyed with commercial form of same dyes was compared. Dyeing of very high color depth was obtained using these nanoemulsions thus eliminating the requirement of milling of the crude disperse dye with the dispersing agent resulting in cost, time and energy savings.