Abstract:

In order to exploit new alkali deweighting accelerant and its application process for polyester fabrics to improve the efficiency of alkali deweigthing, three alkyl imidazolium Gemni ionic liquids were applied as accelerants for alkali deweighting of polyester fabrics, compared with conventional cationic surfactants 1227. The influences of the amount of ionic liquid and sodium hydroxide, temperature and time deweighting ratio of polyester were analyzed. The strength and morphology of polyester fabrics were also tested. The results shows that the alkyl imidazolium Gemini ionic liquid can be used for alkali deweighing, and the effect of ionic liquid accelerator with the same structure on alkali deweighting follows the Traube rule. Gemini ionic liquid accelerator can reduce the consumption of sodium hvdroxide, and promote the alkali deweighting of polyester fabrics. Grooves appears on the surface of polyester, the fineness becomes small, and the specific surface area becomes larger alkali deweighting.

Key words: accelerant, ionic liquid, alkali deweighting, polyester