Micro-nano mosaic coloring technology of cotton fiber
Using polyvinyl alcohol(PVA)as a carrier,cationic modifier/PVA solution and reactive dye/polyethyle-neimine-polyvinyl alcohol(PEI-PVA)colored solution are formulated respectively to achieve dye-free color-ation of cotton fibers by applying the theory of micro-nano fiber cross-scale mosaic spinning.It is found that colored micro-nano fibers and dyed cotton fibers can be obtained by electrostatic spinning with 10%mass frac-tion of PVA as the stock solution,adding 30%mass fraction of cationic modifier,10%PEI,and 5%reactive dye.The dyed cotton fibers are fixed at 100℃for 30 min with 1 g/L NaOH solution to achieve the best color fixation effect,and the color fastnesses of cotton fibers reach Grade 3 and above.
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