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Electrochemical Pigment Coloring of Wool Fabrics
Genyang Cao,Xuefeng Lu,Weilin Xu,Xin Wang 한국섬유공학회 2018 Fibers and polymers Vol.19 No.1
Green processing technology has been examined extensively in the area of textile coloring, because it is usually highly efficient, environmentally friendly, and energy conserving. Herein, a novel pigment coloring technology by electrochemical modification of wool fabric surfaces is reported. This technology exhibits superior color properties with higher efficiency and lower energy and chemical consumption than the conventional cationic pretreatment coloring method. The pigment-colored wool fabric was characterized to investigate its surface morphology and roughness, K/S value, and rubbing fastness (dry and wet) under a variety of experimental conditions. The mechanism of electrochemical pigment coloring technology has been revealed, and the color properties of the fabrics have been fully investigated. Optimized technological parameters, including voltage, coloring time, and electrolyte concentration, have been determined for further application of this promising technology. Electrochemical pigment coloring has great potential for commercialization as it results in superior color performance with less pollution, higher efficiency, and lower input consumption compared with other methods.
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Xin Chen,Dan Sheng,Honghui Xia,Weilin Xu,Bo Deng,Genyang Cao 한국섬유공학회 2020 Fibers and polymers Vol.21 No.12
In this study, a combined dyeing method by integrating the advantages of both carrier dyeing and hot-pressingdyeing was utilized for the dyeing of meta-aramid. A rapid dyeing with increased mechanical properties of the fibers wasachieved for the meta-aramid fiber. A so-called particle flow mechanism involving both N,N-dimethylacetamide (DMAc)and dye molecules was proposed to explain the accelerating effect of this unique dyeing method. The mechanical propertiesand thermodynamic stability of the fiber after hot-pressing were both increased. XRD results showed increasedcorresponding fiber crystallinity. TEM showed that the disperse dyes were well dispersed in DMAc. Cross-sectional opticalphotographs of dyed fibers revealed that the dyes were successfully carried into the interior of the fiber under the synergiceffect of temperature and pressure. Combined with hot-pressing dyeing, the dyeing cycle for the meta-aramid could begreatly shortened and the amounts of dyes and carriers could be significantly reduced.
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