纺织学报 ›› 2019, Vol. 40 ›› Issue (06): 58-63.doi: 10.13475/j.fzxb.20180601306

• 染整与化学品 • 上一篇    下一篇

羊毛织物的蛋白酶改性对墨滴铺展及颜色性能的影响

  


  • 收稿日期:2018-06-01 修回日期:2019-01-21 出版日期:2019-06-15 发布日期:2019-06-25

Effect of wool fabric protease modification on droplet spreading and color performance

  • Received:2018-06-01 Revised:2019-01-21 Online:2019-06-15 Published:2019-06-25

摘要:

为探讨羊毛织物经蛋白酶改性后表面性能变化对喷墨印花中常用活性染料墨滴铺展和颜色性能影响,使用蛋白酶Savinase 16L 处理羊毛织物,观察了墨滴在织物表面变化。借助接触角测量仪、冷场发射扫描电子显微镜和X 射线光电子能谱对未处理和蛋白酶处理后织物的润湿性能、物理形貌和化学组成进行分析。结果表明:蛋白酶改性后织物表面鳞片被刻蚀,纤维结构变得疏松,润湿性能提高;相对于未改性羊毛,改性后羊毛表面不同颜色活性染料墨滴铺展时间和铺展面积均明显减小,以浅红色墨滴为例,铺展时间和铺展面积分别减小了54. 8%和19. 1%;此外,蛋白酶处理导致纤维表面蛋白质显现程度增加,使得更多的活性染料分子同纤维表面氨基基团共价结合,织物表观得色深度和色彩鲜艳度提高。

关键词: 羊毛织物, 喷墨印花, 蛋白酶改性, 表面性能, 墨滴铺展, 颜色性能

Abstract:

In order to investigate the influence of the surface performance of the modified wool fabrics on reactive dye ink droplets spreading and color properties, protease Savinase 16L was used for treating wool fabrics, and the spreading of ink droplets on fabrics and colorimetric values were observed. The contact angle measuring instrument, field emission scanning electron microscopy and X-ray photoelectron spectroscopy were adopted to analyze the wettability, morphology and chemical composition of wool fabrics. The results show that the surface scales of wool fibers are etched, the fiber structure becomes loose, and the wettability is improved after the protease modification. The spreading time and area of reactive dye droplets with different colors on the fabrics are significantly shorter and smaller than those of unmodified fabrics. Taking light red ink droplets as an example, the droplets spreading time and area on the protease treated fabrics decrease by 54. 8% and 19. 1%, respectively. In addition, more proteins are
exposed to the wool fiber surface after the protease treatment, allowing more reactive dye molecules to covalently bond with the amino groups on the fiber surface, thereby improving the color depth and color saturation of wool fabric.

Key words: wool fabric, inkjet printing, protease modification, surface property, ink droplet spreading, color performance

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