Synthesis and Characterization of an Amine-Terminated AB2-Type Hyperbranched Polymer and Its Application in Dyeing of Poly(ethylene terephthalate) Fabric with Acid Dye

摘要

A hyperbranched, functional, water-soluble, and amine-terminated polymer is synthesized using a melt polycondensation reaction of methyl acrylate and diethylene triamine. The polymer is then characterized by FTIR and NMR spectroscopy. The polymer is soluble in some polar solvents. Poly(ethylene terephthalate) (PET) fabric as well as the fabric hydrolyzed by sodium hydroxide is treated with the polymer. A significant improvement in dyeability of PET fabric treated by the polymer with acid dye (C.I. Acid Red 114) is observed. The color characteristics of the dyed samples are evaluated using the CIELAB method. The results, obtained from dyed samples with conventional dyeing, reveal that a hyperbranched polymer, as indicated by the zeta potential measurements, offers positively charged amino groups leading to higher dye uptake.