Novel cationic cotton fabricswere prepared by an efficient and simple one-step pad–dry–bake pretreatment processwith
betaine as cationic reagent. Ester bonds formed between cotton fibers and betaine hydrochloride were
proved by Fourier transformed infrared attenuated total reflection (FTIR-ATR) spectra. Moreover, the properties
of the cationic fabrics, including X-ray Diffraction (XRD), tensile strength and whiteness and yellowness index,
were investigated in comparison with that of the untreated ones. The cationic fabrics were applied in salt-free
dyeing of C.I. Reactive Red 195, C.I. Reactive Yellow145 and C.I. Reactive Blue 19. Different dye fixation processes
were applied and compared for untreated and cationic cotton. Dye fixation and color fastness properties of the
dyeswere tested, and the results presented that dye fixation on the cationic fabrics in the absence of saltwas improved
with satisfactory light fastness property and applicable wash and rub fastnesses.
© 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
Novel cationic cotton fabricswere prepared by an efficient and simple one-step pad–dry–bake pretreatment processwithbetaine as cationic reagent. Ester bonds formed between cotton fibers and betaine hydrochloride wereproved by Fourier transformed infrared attenuated total reflection (FTIR-ATR) spectra. Moreover, the propertiesof the cationic fabrics, including X-ray Diffraction (XRD), tensile strength and whiteness and yellowness index,were investigated in comparison with that of the untreated ones. The cationic fabrics were applied in salt-freedyeing of C.I. Reactive Red 195, C.I. Reactive Yellow145 and C.I. Reactive Blue 19. Different dye fixation processeswere applied and compared for untreated and cationic cotton. Dye fixation and color fastness properties of thedyeswere tested, and the results presented that dye fixation on the cationic fabrics in the absence of saltwas improvedwith satisfactory light fastness property and applicable wash and rub fastnesses.© 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
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