Method and Model for Enchancing Efficiency of Chemical Fiber Use in Textile Industry

Mechanism and application of ozone fading: Oxidative decolorisation of disperse dyes and waste‐dyed polyester fabrics

“…As shown in Figure 6, with the increase in pH value, the decolorisation effect decreased and the strength damage increased. A high decolorisation effect and SRR can be obtained by ozone treatment under strongly acidic conditions because of the increased decomposition trend of ozone to •OH 4 ; therefore, the oxidation effect increase was attributable to the synergistic effect between the free radicals and ozone molecules. At the same time, PET fabric has good acid resistance, and ozone treatment under acidic conditions will cause less damage to PET fabric.…”

“…1,2 At present, because of increasing demand there is a massive shortage of PET, which has resulted in an acceleration of textile use efficiency and growth in the amount of textile waste each year. [3][4][5] To avoid the potential environmental risk from the current treatment method for waste PET, including burning and burying, 2 several chemical and physical methods have been developed for the recycling process, although it is difficult to the meet the requirements for sustainability, such as the degradation to lower molecular weight monomers by terephthalate, terephthalic acid, dimethyl terephthalate or ethylene glycol, or melting and repining. [6][7][8] However, the actual recycling process in the textile industry is not in accord with the process designed in the laboratory, because the PET is coloured by the dye or pigment with the assistance of additives.…”

“…55.1 million tonnes 1,2 . At present, because of increasing demand there is a massive shortage of PET, which has resulted in an acceleration of textile use efficiency and growth in the amount of textile waste each year 3–5 …”