期刊
POLYMERS
卷 12, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/polym12020462
关键词
cotton fabric; modification; reactive dyes; graft copolymerization; salt-free dyeing
资金
- National Natural Science Foundation of China [21878040, 21536002, 21376042, 21421005]
- Fundamental Research Funds for the Central Universities [DUT19TD28]
- program for Chang Jiang Scholars and Innovative Research Team in University [IRT-13R06]
Modification of cotton fabric with 2-methacryloyloxyethyltrimethyl ammonium chloride (DMC) was achieved through free-radical initiated graft polymerization with K2S2O8/NaHSO3 as the initiator. Grafting of DMC was confirmed by ATR-IR of the modified cotton. The optimal grafting reaction conditions, including DMC dosage, mole ratio of initiator to DMC, temperature, and time, were determined by cation content and dye fixation results of the modified cotton. The modified fibers were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and whiteness measurement. Salt-free dyeing of the modified cotton with commonly used C. I. Reactive Blue 19, C. I. Reactive Yellow 145, and C. I. Reactive Red 195 presented high fixation of 96.8%, 98.7%, and 97.3%, respectively. These results indicated that the modification is effective for changing the surface charge of the fiber and increasing the dye-fiber reactivity. The color fastness and strength property were still very satisfactory. With excellent properties, this dyeing method shows promise in real application for eliminating the usage of salt and reducing environmental pollution.
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