Why is water soluble dyes for polyester fabric dyeing rate is very low? - Music in Japan
Why is water soluble dyes for polyester fabric dyeing rate is very low? Mainly because of polyester itself is not bibulous. Full name polyester or polyester, polyethylene terephthalate, is a kind of typical hydrophobic synthetic fiber, raw materials from oil chemical products. Since it itself is hydrophobic, of course, can only use hydrophilic dyes, disperse dyes to dye.
hydrophilic water-soluble dye, and the hydrophobicity of polyester, is difficult to compatible, so also is not dyed. Not dyeing rate is low, but cannot be dyed.
why water-soluble dyes for polyester fabric dyeing rate is very low? Polyester high degree of crystallization, macromolecular structure closely, water-soluble dye is big, can't enter the space of polyester fine, only disperse dye this small molecule dyes can be under high temperature and high pressure.
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