SA/TDI/PEG adducts as water repellent finishes for cotton/polyester blended fabric

SA/TDI/PEG adducts were prepared by reacting of TDI with mixtures of SA and different PEG molecular weights. The potential application of these adducts emulsions as water repellent finishes was investigated. One of the aforementioned prepared adducts namely, SA/TDI/PEG1000 adduct was characterized by FTIR analysis. TEM image of such adduct emulsion shows that its particle size ranges from 2 to 54nm. Moreover, the surface of that adduct emulsion treated fabric was characterized via SEM. [Display omitted] •New adducts were prepared by reacting of TDI with SA and different MWs of PEG.•The prepared adducts were applied as textile water repellent finishes.•SA/TDI/PEG1000 adduct was characterized by FTIR analysis and emulsion TEM image.•The surface of that adduct emulsion treated fabric was characterized by SEM. New SA/TDI/PEG adducts were prepared by reacting mixture of stearyl alcohol (SA) and polyethylene glycols (PEG’s 400, 1000, 2000, and 6000Da) with 2,4-toluene diisocyanate (TDI). The optimum conditions of synthesis reaction are: PEG/SA, 20%; TDI/SA, 20%; reaction temperature, 100°C and reaction time, 90min. The potential application of such prepared adducts as water repellent finishes for cotton/PET fabric was examined by incorporating of 40g/l of these adducts emulsions in different easy-care finishing formulations. Results obtained indicated an enhancement in both the water repellency as well as softness properties along with stiffness properties of treated fabric. FTIR analysis confirms the SA/TDI/PEG1000 adduct chemical structure while the TEM image of its emulsion shows that the emulsion of particle size ranges from 2 to 54nm. Moreover, the surface of SA/TDI/PEG1000 adduct treated fabric was characterized via scanning electron microscope (SEM). Except for SA/TDI/PEG400 adduct, the prepared adducts treated fabric show durability to washing up to 10 washing cycles.