Christian Doppler Laboratory for Textile and Fibre Chemistry in Cellulosics, Research Institute of Textile Chemistry and Textile Physics, Dornbirn, University of Innsbruck, Innsbruck, Austria.
Biotechnol J. 2011 Oct;6(10):1280-5. doi: 10.1002/biot.201100002. Epub 2011 Apr 13.
Surface activation of fabric made from cellulose fibres, such as viscose, lyocell, modal fibres and cotton, can be achieved by printing of a concentrated NaOH-containing paste. From the concentration of reducing sugars formed in solution, an increase in intensity of the cellulase hydrolysis by a factor of six to eight was observed, which was mainly concentrated at the activated parts of the fabric surface. This method of local activation is of particular interest for modification of materials that have been dyed with special processes to attain an uneven distribution of dyestuff within the yarn cross-section, e.g., indigo ring-dyed denim yarn for jeans production. Fabrics made from regenerated cellulose fibres were used as model substrate to express the effects of surface activation on indigo-dyed material. Wash-down experiments on indigo-dyed denim demonstrated significant colour removal from the activated surface at low overall weight loss of 4-5%. The method is of relevance for a more eco-friendly processing of jeans in the garment industry.
纤维素纤维（如粘胶纤维、莱赛尔纤维、莫代尔纤维和棉纤维）制成的织物可以通过印刷高浓度含 NaOH 的糊剂来进行表面活化。从溶液中形成的还原糖浓度来看，纤维素酶水解的强度增加了六到八倍，主要集中在织物表面的活化部分。这种局部活化的方法对于已经经过特殊处理进行染色的材料的改性特别有意义，以实现染料在纱线横截面上的不均匀分布，例如用于生产牛仔裤的靛蓝环染牛仔纱线。再生纤维素纤维制成的织物被用作模型底物来表达表面活化对靛蓝染色材料的影响。对靛蓝染色牛仔布的洗涤实验表明，在总失重为 4-5%的情况下，从活化表面显著去除了颜色。该方法对于服装行业中更环保的牛仔布加工具有重要意义。
