Study Of Anti-crease Finishing Of Ramie Fabric With Mixed Poly-carboxylic Acid And Mixed Catalyst

With the enhancing of the idea to protect the environment, It becomes necessary and urgent to develop a new kind of aldehyde-free finishing agent to replace the traditional agents such as N-hydroxymethyl amide. In this paper, the anti-creasing quality, washability, whiteness, breaking strength, stiffness and permeability of treated ramie fabric are analyzed. And the proper component—citric acid and tartaric acid (mole proportion is 1:1) is selected by comparing the integrated performance of the ramie fabric treated with the mixed poly-carboxylic acid solution of citric acid, tartaric acid, apple acid and so on in which the citrate sodium is used as activator. Then regarding the mixed poly-carboxylic acid solution as the finishing agent, we discuss the effect of the phosphorus activators and non-phosphorus ones. Mixed activator (citrate sodium, oxalic sodium and acetate sodium) is optimized after analyzing the different capabilities of the treated fabric. Basing on these, we optimize the recipe of finishing and processing conditions. And discuss the effect of the finishing to the dyeing capability of the ramie fabric.At the same time, the catalyzing mechanisms of hypophosphate sodium and citrate sodium are analyzed in the paper by using FT-IR to test the changes of the structure of the ramie fabric before and after finishing. According to the result, there is crosslinking between the finishing agent and the ramie fabric to make it have the anti-crease property.