Effects of pH and Neutral Salts on the Adsorption of the Poly(ethylene glycol terephthalate) Condensates Toward Poly(ethylene terephthalate) Fiber

Aqueous reactive polyurethane prepolymer with poly(ethylene oxide) monomethyl ether side chains for the hydrophilic finishing of poly(ethylene terephthalate) fabrics

“…In the past, there have been many processing methods proposed to improve the hydrophilic properties of poly(ethylene terephthalate) (PET) fiber, mainly including the copolymerization of hydrophilic monomers,13 the combination of hydrophilic ingredients and spinning,14, 15 the grafting copolymerization of hydrophilic monomers,16, 17 the cavitation erosion or hollowing of fibers and fluffing of textiles,18, 19 and the covering of hydrophilic resins or adsorption 20–28. In the covering or adsorption of hydrophilic resins, previous researchers generally employed water‐soluble polyester, acrylic, silicone, and epoxy resin with fabric‐padding or fiber‐coating methods;20–23 alternatively, a dipping process could be carried out to increase the adsorption of PET fabric 24–28. In a patent, Lark20 synthesized a hydrophilic polyester from acid anhydride, aromatic poly(carboxylic acid), and PEG to treat PET fabric by a padding method.…”

“…Zeronian et al24 treated PET fabrics with a nonionic polymeric hydrophile by a dipping method, which allowed the hydrophilic compound to be adsorbed onto the fibers to increase the surface tension and hydrophilic properties of PET fabrics. We previously synthesized an ester type of polyol with dimethyl terephthalate, ethylene glycol, and PEG to study the effects of the benzene ring number and PEG arrangement on the hydrophilic properties and adsorptive behavior of PET fabrics 25, 26. The fabric treated by polyol with PEG connected to only one end of the double benzene ring had better washing durability and hydrophilic effects.…”