Sri Lanka Institute of Nanotechnology, Nanotechnology & Science Park, Mahenwatta, Pitipana, Homagama, Sri Lanka.
Sri Lanka Institute of Nanotechnology, Nanotechnology & Science Park, Mahenwatta, Pitipana, Homagama, Sri Lanka.
Carbohydr Polym. 2015 Dec 10;134:182-9. doi: 10.1016/j.carbpol.2015.07.088. Epub 2015 Jul 31.
A method of coloration of cotton fabrics with nano chitosan is proposed. Nano chitosan were prepared using crab shell chitin nanofibers through alkaline deacetylation process. Average nano fiber diameters of nano chitosan were 18 nm to 35 nm and the lengths were in the range of 0.2-1.3 μm according to the atomic force microscope study. The degree of deacetylation of the material was found to be 97.3%. The prepared nano chitosan dyed using acid blue 25 (2-anthraquinonesulfonic acid) and used as the coloration agent for cotton fibers. Simple wet immersion method was used to color the cotton fabrics by nano chitosan dispersion followed by acid vapor treatment. Scanning electron microscope and atomic force microscope study of the treated cotton fiber revealed that the nano chitosan were consistently deposited on the cotton fiber surface and transformed in to a thin polymer layer upon the acid vapor treatment. The color strength of the dyed fabrics could be changed by changing the concentration of dyed nano chitosan dispersion.
提出了一种用纳米壳聚糖对棉织物进行着色的方法。纳米壳聚糖是通过碱脱乙酰过程从蟹壳甲壳素纳米纤维中制备的。根据原子力显微镜研究，纳米壳聚糖的平均纳米纤维直径为 18nm 至 35nm，长度在 0.2μm 至 1.3μm 范围内。该材料的脱乙酰度为 97.3%。用酸蓝 25（2-蒽醌磺酸）对制备的纳米壳聚糖进行染色，并用作棉纤维的着色剂。通过纳米壳聚糖分散体的简单湿浸渍法对棉织物进行着色，然后进行酸蒸汽处理。对处理后的棉纤维进行扫描电子显微镜和原子力显微镜研究表明，纳米壳聚糖均匀地沉积在棉纤维表面上，并在酸蒸汽处理下转化为薄的聚合物层。通过改变染色纳米壳聚糖分散体的浓度可以改变染色织物的色强度。
