Free radical graft polymerization of diallyldimethylammonium chloride (DADMAC) on cotton was employed to substantially improve the dyeability cotton with reactive dyes under salt-free conditions. The effects of plasma-induced graft polymerization of DADMAC on cotton, followed by dyeing with different reactive dyes, was characterized by Fourier transform infrared spectroscopy. A color fastness wash test was conducted to evaluate the effectiveness of cotton cationization on reactive dye fixing. The results show that the salt-free dyeing process with reactive dyes was effective after cationization modification, and the dye uptake rate and dyeing depth are higher than the conventional dyeing techniques.

采用二烯丙基二甲基氯化铵（DADMAC）在棉上进行自由基接枝聚合，在无盐条件下显着提高活性染料对棉的染色性。通过傅里叶变换红外光谱表征了DADMAC的等离子体诱导接枝聚合对棉花的影响，然后用不同的活性染料染色。进行色牢度水洗试验以评估棉阳离子化对活性染料固色的有效性。结果表明，活性染料经阳离子化改性后的无盐染色工艺效果显着，上染率和染色深度均高于常规染色工艺。