Synthesis of binder and application in polyester fabric with micro-water printing of disperse blue 79

In order to reduce the disperse dye direct printing wastewater emission, the silicone-modified polyacrylate latex as polyester fiber binder was synthesized by the emulsion polymerization using butyl acrylate, styrene, acrylonitrile and octamethylcyclotetrasiloxane, methacrylic acid and N-methylol acrylamide as reactive monomers. The Fourier transform infrared spectrometer and X-ray photoelectron spectroscopy were adopted to characterize the chemical structure. The function of the silicone-modified polyacrylate binder in micro-water printing process of liquid disperse dye B-79 was investigated. The influence of post-treatment in conventional direct printing and micro-water printing on wastewater properties and color fastness was compared. The results show that the silicone-modified polyacrylates binder applied in directly printing can increase the dye uptake. After washing in hot water at 80℃, soaping fastness and dry/wet rubbing fastness are up to 4-5 level by the micro-water printing process. The value of chemical oxygen demand, the amount of residue and the dye concentration of wastewater are 1/20, 1/5and 1/25 of those by direct printing using disperse blue H2GL. Therefore, the proposed process is green and environment-friendly. Copyright No content may be reproduced or abridged without authorization.