Effect of Pretreatment and Dyeing Processes on the Physical Properties of Poly(Lactic Acid)/Cotton Blended Fabric

Abstract

The properties of PLA spun yarn was investigated comparing with cotton and PET spun yarns of the same linear density. The PLA/cotton blended fabric (50/50) was prepared and the fabric properties were analyzed in comparison with the 100% PLA and cotton fabrics. It was found that in the PLA/cotton blended fabric, cotton was the component that imparted moisture absorption, strength and drapeability to the fabric, while, PLA provided dimensional stability to the blend. Investigation of the effect of the pretreatment and dyeing processes found that the bleaching process for cotton with H2O2 under alkaline conditions caused a significant strength loss to the PLA fabric. The dyeing processes exhibited a slightly negative effect on the fabric strength. Meanwhile, the strength of cotton fabric was much less affected by the pretreatment and dyeing processes used. The fabric hand properties, viz. stiffness and drapeability of PLA and cotton fabrics were also influenced by the pretreatment and dyeing processes.

Application of Sulphatoethylsulphone Reactive-Disperse Dye on PLA and Cotton Fabrics

“…PLA/cotton blend can be claimed as a 100% biodegradable blended fiber. Dyeing PLA/cotton blend by one-bath process not only reduces an energy consumption and a cost of effluent treatment but also helps prevent a severe loss of PLA strength which frequently experiences in the 2-step process as PLA fiber is rather sensitive to hydrolysis and has relatively low thermal properties as compared with PET [5][6][7]. In this research, the reactivedisperse dye containing sulphatoethylsulphone group was synthesized and its dyeing properties on cotton and PLA fabrics were determined so as to gain a view of the dyeing characteristics of this reactive-disperse dye on PLA/cotton blended fabric.…”

Poly(lactic acid)/Organoclay Nanocomposite Fibers: Preparation, Characterization and Curcumin Natural Dyeing

“…However, traditional approaches to achieve dyeability of PLA fiber, such as UV/ozone irradiation [18], blending [19][20][21][22] and specially designed dyes [23] considerably increase the overall cost of fiber manufacturing and the dyeing procedure.…”