Pretreatment of Proteinic and Synthetic Fibres Prior to Dyeing

Evaluation properties of cotton/flax/polyester blended fabrics after chemical treatments and dyeing

“…On the other hand, the loss of tensile strength and elongation% in HM and HM-M techniquesmay be due to the effect of the energy of microwave which causes a random motion of the particles of NaOH generating heat and speed of motion leading to hydrolysis occur causing decreases in tensile and elongation (24). Also, the treatment of the polyester fibers with 6 g/l of sodium methoxide in methanol causes weight loss of fiber, and the fiber acquires the silk-handle .Methanol-alkaline treatment resulted in a steeper tendency in the loss in weight, (25).From the results obtained in Table 3, it is observed that there is a significant drop in tensile strength of the CFP fabric sample along with the gain in elongation-at-break after dyeing in comparison of scouring and dyed fabric sample (S1). The drop in tensile strength might be due to the fact that polyester yarns get hydrolysis in the different treatment techniques, and also, due to the breaking of internal structural elements of the cotton and flax during reactive dyeing, (26).…”

Roll‐to‐Roll Atmospheric Plasma Treatment: A Green and Efficient Process to Improve the Hydrophilicity of a PET Surface

“…As a result, they require a superficial modification that increases their hydrophilic properties without altering the bulk. Usually wet-chemical treatments are performed to introduce polar groups onto the surface, [7] but they damage the polymer matrix and require the disposal of Poly(ethylene terephthalate) (PET) fibers are widely used in various fields owing to their good physical properties and chemical resistance, but PET hydrophobicity heavily compromises its use in many applications. Wet-chemical treatments are often required to induce hydrophilicity, but these can damage the polymer matrix and produce large volumes of liquid wastes.…”