ABSTRACT

Cashmere fiber is pretreated with oxygen low temperature plasma to increase the content of polar groups (-OH, -COOH) on the surface. Then by using aziridine crosslinker and polycarbodiimide crosslinker, the sericin with health-care function is grafted onto the surface of the pretreated cashmere fiber. Plasma treatment is optimized after the assessing of methylene blue staining and fiber tensile strength. The grafting rate of sericin indicates that both aziridine and polycarbodiimide crosslinker could play a bridging role. Compared with untreated fiber, oxygen plasma treatment can improve the grafting rate significantly. The chemical changes and morphological structures of the fiber surface are analyzed by infrared spectroscopy and scanning electron microscope. After modification, cashmere exhibited good antibacterial and antioxidant properties. In addition, the fiber still has excellent dyeability while its crimp property and whiteness are slightly reduced.

摘要

羊绒纤维经过氧低温等离子体预处理，增加表面极性基团（-OH、-COOH）的含量。然后利用氮丙啶交联剂和聚碳二亚胺交联剂，将具有保健功能的丝胶接枝到预处理后的羊绒纤维表面。在评估亚甲蓝染色和纤维拉伸强度后优化等离子体处理。丝胶的接枝率表明氮丙啶和聚碳二亚胺交联剂都可以起到架桥作用。与未经处理的纤维相比，氧等离子体处理可以显着提高接枝率。通过红外光谱和扫描电镜分析纤维表面的化学变化和形态结构。改性后的羊绒表现出良好的抗菌和抗氧化性能。