Study on Dyeing of a Novel,Pro-environment Polylactic Acid （PLA） Fiber Yarn

Seventeen disperse dyes including anthraquinone, azo, methine, nitro, and quinoline dyes were applied to dye the Polylactic Acid （PLA） yarns at different conditions, and the dyebath exhaustion was determined. The result shows that C.I. disperse red 167, C.I. disperse orange 30, and C.I. disperse blue 284 have dye-uptakes greater than 80%. Therefore, they can be used as the three principal dyes for PLA yams. The experiment discovered that the dyes, because of their Monoazo and ester group contents, have a higher dye-uptake for the PLA fiber. The research on the optimization of dyeing techniques suggests that PLA yarn can obtain a high level of dyeing effectiveness at the following conditions： pH 4- 5, dyeing temperture 110℃ for 30- 40 min. Color fastness to perspiration, and waterwashing fastness increased 1 - 1.5 by the addition of the abstergent FB during the reduction clearing.     

Evaluation of Uncertainty for Detecting the Content of Banned Aromatic Amines in Textile Products by GC-MS

IntroductionThe research onthe hazard of banned aromatic aminesto human has been matured. After absorbed by skin,aromatic amines will diffuse in human body ,be mixed withthe substances released by nor mal metabolis m, generatereducing reaction into carcinogenic or doubtfulcarcinogenic aromatic amine and then combine with thenucleophilic point in DNAto for mcovalent bond, whichisthe inducing factor of human diseases . Thus , cancer orirritability is resulted. The concrete for mula is listed a…