Li Hao, Pei Liujun, Zhang Hongjuan, Wang Zhiwen, Saleem Muhammad Asad, Alebeid Omer Kamal, Wang Jiping
Engineering Research Center of Textile Chemistry and Clean Production, Shanghai University of Engineering Science, Shanghai 201620, China.
School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China.
Polymers (Basel). 2021 Oct 26;13(21):3687. doi: 10.3390/polym13213687.
As a promising new dyeing process without using water, the non-aqueous medium dyeing of polyester has attracted people's attention and some progress has been made in related research. However, the oligomers of polyester fiber can affect the dyeing of polyester during the use of a silicone waterless dyeing system. Based on this point, the oligomer problem in the silicone waterless dyeing system was investigated. The oligomers of some different types of polyester were extracted by solvent extraction. A treatment method with little influence on the fiber was used to reduce the oligomer content in polyester. The improvement of the dyeing effect of polyester after treatment in silicone medium was studied, and the influence of the oligomer on polyester dyeing was also analyzed. For the dyeing of disperse blue 366, the dye exhaustion was increased by 3.25-3.71%, and the color depth of the dyed sample was increased by 6-13%. Moreover, the colorfastness to rubbing was also improved. In the comparison, the changes in thermal properties and crystallization properties of polyester were tested by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and X-ray diffraction analysis (XRD). The results showed that the thermal and crystalline properties of polyester fiber were not changed before and after solvent extraction.
作为一种有前景的新型无水染色工艺，聚酯纤维的非水介质染色已引起人们的关注，并且在相关研究中取得了一些进展。然而，在使用有机硅无水染色体系时，聚酯纤维的低聚物会影响聚酯纤维的染色。基于这一点，对有机硅无水染色体系中的低聚物问题进行了研究。通过溶剂萃取法提取了一些不同类型聚酯的低聚物。采用了一种对纤维影响较小的处理方法来降低聚酯中的低聚物含量。研究了聚酯在有机硅介质中处理后染色效果的改善情况，并分析了低聚物对聚酯染色的影响。对于分散蓝366的染色，上染率提高了3.25 - 3.71%，染色样品的色深提高了6 - 13%。此外，摩擦牢度也得到了改善。在对比中，通过差示扫描量热法（DSC）、动态力学分析（DMA）和X射线衍射分析（XRD）测试了聚酯热性能和结晶性能的变化。结果表明，溶剂萃取前后聚酯纤维的热性能和结晶性能没有改变。
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