A normal temperature and pressure dyeing method for polyester textiles mediated by a polyelectrolyte polymer nanofilm
A polyelectrolyte and atmospheric pressure dyeing technology, which is applied in the field of textile printing and dyeing, can solve the problems of polyester fabrics such as the decrease of color fastness and the failure to form a firm bond, and achieve easy operation, improved hydrophilicity, and avoid toxic carriers and complicated dyeing The effect of using the equipment
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Embodiment 1
[0038] According to the above process steps: choose 180g / m 2The pure polyester fabric was used as the sample to be dyed, and the 0.5M sodium hydroxide aqueous solution was prepared, and the polyester fabric was soaked in the lye solution, and the liquor ratio was kept at 1:10. Magnetic stirring was carried out at 40 °C for 1 h. The alkali-treated polyester fabric was washed three times with deionized water and then dried at a drying temperature of 60°C for 30 min. The dried polyester fabric is immersed in an aqueous solution of polyelectrolyte polymer solution polyethyleneimine and polyacrylic acid in turn, wherein the concentrations of the aqueous solutions of polyethyleneimine and polyacrylic acid are 0.5 mg / mL respectively, and both contain 0.5 M NaCl. Scanning electron microscope test showed that the surface of polyester fiber treated with alkali solution at 40 ℃ did not change significantly, and the surface morphology (attached). figure 1 b) The basic and as-received s...
Embodiment 2
[0041] According to the above process steps: choose 180g / m 2 The pure polyester fabric was taken as the sample to be dyed, and the 0.5M sodium hydroxide aqueous solution was prepared, and the polyester fabric was soaked in the lye solution, and the liquor ratio was kept at 1:20. Magnetic stirring was carried out at 70 °C for 1 h. The alkali-treated polyester fabric was washed three times with deionized water and then dried at a drying temperature of 60°C for 30 min. The dried polyester fabric was immersed in an aqueous solution of polyelectrolyte polymer solution polyethyleneimine and sodium alginate in turn, wherein the concentrations of the aqueous solutions of polyethyleneimine and sodium alginate were 0.5 mg / mL, and both contained 0.5M NaCl. Scanning electron microscope test showed that the surface of polyester fiber after being treated with alkali solution at 70 ℃ began to become rough (attached). figure 1 Figure c in ). Moreover, in the polyester fabric after assembl...
Embodiment 3
[0044] According to the above process steps: select 180g / m2 pure polyester fabric as the sample to be dyed, configure 0.5M sodium hydroxide aqueous solution, soak the polyester fabric in lye, and keep the liquor ratio at 1:10. Magnetic stirring was carried out at 70 °C for 1 h. The alkali-treated polyester fabric was washed three times with deionized water and then dried at a drying temperature of 60°C for 30 min. The dried polyester fabric is soaked in an aqueous solution of polyelectrolyte polymer solution polyethyleneimine and sodium polystyrene sulfonate in turn, wherein the concentrations of the aqueous solutions of polyethylene imine and sodium polystyrene sulfonate are 0.5 mg respectively / mL, and both contained 0.5M NaCl. The polyester fabric assembled with two double-layer polyethyleneimine / sodium polystyrene sulfonate nanomembranes was immersed in a water-soluble dye methylene blue dye solution at room temperature and pressure for dyeing with a liquor ratio of 1:50....
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