Influence on Rex Rabbit Hair by Low-temperature Plasma in Different Gas Media

摘要

In order to find out changes of the Rex rabbit hair under different Low Temperature Plasma (LTP) treatments, Rex rabbit hair fibres which were modified by oxygen, nitrogen, and air plasma, were examined by XPS, ultraviolet-visible spectrophotometery, Lab-eye software, HP-386 multi-angle gloss meter, YM-06A electronic single fibre strength meter, as well as by a Y151 fibre friction coefficient tester. The results show that oxygen plasma, nitrogen plasma and air plasma can all dramatically enhance exhaustion and fixation rate of Rex rabbit hair during dyeing. Treatment with air plasma and nitrogen plasma introduced more -NH2 to the surface of Rex rabbit hair fibres, promoting the reaction between -NH2 and -SO3H of an anionic dyestuff in an acidic medium. Besides, the oxidation of oxygen plasma introduces polar functional groups such as hydroxyl or carbonyl, thus improving the hydrophilicity of Rex rabbit hair fibres. Compared with fibres without plasma treatment, the dyeing depth of fibres treated with oxygen, air, and nitrogen plasma has been significantly enhanced. In addition, the rupture strength and elongation as well as glossiness of fibres reduces to a slight extent after LTP treatment with oxygen, nitrogen, and air. Ultimately, after oxygen, air and nitrogen plasma, the gap between the friction coefficients of against and along scale is narrowed, which can enhance the ability of the anti-felting performance.