Why is water soluble dyes for polyester fabric dyeing rate is very low?
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Music in Japan
by:Jingliang2020-07-19
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.