Figure 2From: Thermoset composites reinforced with recycled cotton textile residues Longitudinal structure and cross microscopy of cotton open-end warp yarn. (a) Longitudinal structure of cotton open-end warp yarn (magnification ×51). (b) Cross microscopy of cotton open-end warp yarn superficially indigo dyed. Inside the presence of undyed cotton fibers is noted (magnification ×320).Back to article page