Salt-free reactive dyeing of betaine-modified cationic cotton fabrics with enhanced dye fixation  

作　　者：Wei Ma Mei Meng Shumin Yan Shufen Zhang 

机构地区：[1]State Key Laboratory of Fine Chemicals, Dalian University of Technology

出　　处：《Chinese Journal of Chemical Engineering》2016年第1期175-179,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(21376042;21421005);the National Key Technology R&D Program(2013BAF08B06);Innovative Research Team of Ministry of Education of the People's Republic of China(IRT-13R06);Dalian University of Technology(DUT2013TB07)

摘　　要：Novel cationic cotton fabrics were prepared by an efficient and simple one-step pad–dry–bake pretreatment process with 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 Yellow 145 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 dyes were tested, and the results presented that dye fixation on the cationic fabrics in the absence of salt was improved with satisfactory light fastness property and applicable wash and rub fastnesses.Novel cationic cotton fabrics were prepared by an efficient and simple one-step pad–dry–bake pretreatment process with 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 Yellow 145 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 dyes were tested, and the results presented that dye fixation on the cationic fabrics in the absence of salt was improved with satisfactory light fastness property and applicable wash and rub fastnesses.

关 键 词：Salt-free dyeing Betaine Cationic cotton Reactive dyes 

分 类 号：TS193.632[轻工技术与工程—纺织化学与染整工程]