Zhao Zhong, Hurren Chris, Zhang Mingwen, Zhou Liming, Wu Jihong, Sun Lu
Institute for Frontier Materials, Deakin University, Geelong 3220, Australia.
School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430073, China.
Materials (Basel). 2020 Nov 26;13(23):5365. doi: 10.3390/ma13235365.
Natural dye's poor affinity for cotton and poor fastness properties still hinder its applications in the textile industry. In this study, a doubled-layered chitosan coating was cured on cotton fabric to serve as bio-mordant and form a protective layer on it. Under the optimal treatment conditions, the maximum (adsorption amount) of the natural dye sodium copper chlorophyllin (SCC) calculated from the Langmuir isothermal model was raised from 4.5 g/kg to 19.8 g/kg. The dye uptake of the treated fabric was improved from 22.7% to 96.4% at 1% o.w.f. dye concentration. By a second chitosan layer cured on the dyed fabric via the cross-linking method, the wash fastness of the cotton fabric dyed with SCC can be improved from 3 to 5 (ISO 105 C-06). The natural source of the biopolymer material, chitosan, and its ability to biodegrade at end of life met with the initial objective of green manufacturing in applying natural dyes and natural materials to the textile industry.
天然染料对棉的亲和力较差且色牢度不佳，这仍然阻碍着它在纺织工业中的应用。在本研究中，双层壳聚糖涂层被固化在棉织物上，用作生物媒染剂并在其上形成一层保护层。在最佳处理条件下，根据朗缪尔等温模型计算得出的天然染料叶绿素铜钠盐（SCC）的最大吸附量从4.5 g/kg提高到了19.8 g/kg。在染料浓度为1%（owf）时，处理后织物的染料上染率从22.7%提高到了96.4%。通过交联法在染色织物上固化第二层壳聚糖，用SCC染色的棉织物的水洗色牢度可以从3级提高到5级（ISO 105 C - 06）。生物聚合物材料壳聚糖的天然来源及其在使用寿命结束时的生物降解能力，符合在纺织工业中应用天然染料和天然材料的绿色制造的初始目标。
