中文摘要：

为解决天然染料原液着色海藻纤维纺丝时着色剂易溶出的问题,以叶绿素铜（Chl-Cu）为着色剂,采用海藻酸钠稀溶液作为研磨助剂和分散剂,制备了原液着色的纺丝液,并制得有色海藻纤维。利用红外光谱仪、流变仪和透射电子显微镜对纺丝液的性能进行表征,利用扫描电子显微镜对制得纤维的形貌进行观察,测试着色剂的耐水迁移性和纤维的阻燃性能。结果表明：当Chl-Cu的添加量低于6%时,纺丝液最稳定,Chl-Cu以直径小于20 nm的颗粒形式均匀分布;研磨时海藻酸钠分子与Chl-Cu形成的铜交联结构避免了Chl-Cu纳米颗粒的团聚现象,实现了Chl-Cu的快速研磨与稳定分散;纤维中Chl-Cu具有良好的耐水迁移的能力,海藻纤维的形貌未受Chl-Cu的影响,纤维阻燃性能优异,极限氧指数值高于39%。

英文摘要：

On account of the dissol ution loss of colorant in natural dyes coloring alginate fiber during wet spinning,copper chlorophyll（CHl-Cu） was used as colorant and sodium alginate dilute solution was used as organic grind auxiliary agent and dispersant,dope dyeing spinning solution and alginate fiber were prepared. Properties of coloring spinning solution was characterized by infrared spectroscope,rotary rheometer and transmission electron microscope. The morphology of dyed alginate fiber was observed by scanning electron microscope,and water resistante migration and flame-retardany of fibers were tested. The results show stability of dyed spinning solution is the best when the Chl-Cu content is under 6%,and the Chl-Cu can be distributed evenly with a diameter imaller than 20 nm. The agglomeration of Chl-Cu nano particles are successfully eliminated,on account of Cu2 ＋cross-linking structure between Chl-Cu nanoparticles and SA. Chl-Cu can be ground successfully and dispersed stably. Chl-Cu colorant has good water resistant migration,and does not change the fiber surface. The dope-dyed alginate fiber has a perfect flame retardancy,and the limiting oxygen index is above 39%.