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Improving the pilling property of knitted wool fabric with atmospheric pressure plasma treatment

机译：常压等离子体处理改善针织羊毛织物起球性能

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摘要

Knitted wool fabrics are very easy to pill during wear and use. In this study, knitted wool fabrics were treated with atmospheric pressure plasma (APP), a completely dry treatment, using plasma jet with helium and oxygen as carrier and reactive gas, respectively, under various processing parameters: (i) jet-to-substrate distance; (ii) oxygen flow rate; and (iii) treatment time. This paper reports the study of how these APP processing parameters influence pilling property of knitted wool fabrics. After APP treatment, pilling property of knitted wool fabrics was evaluated by standard testing method for pilling (EN ISO 12945-1; ICI pilling box method). Also, a conventional wet anti-pilling treatment (with an anti-pilling agent) was carried out on knitted wool fabrics in order to compare anti-pilling effect of APP (dry treatment) and anti-pilling agent (wet treatment). Experimental results revealed that the APP treatment can greatly improve anti-pilling performance without adverse effect like yellowing. Scanning electron microscopy revealed that surface etching effect induced by APP treatment could be one of the reasons of improved anti-pilling property of knitted wool fabrics. Various processing parameters provide different degrees of etching on wool fibre surface. Meanwhile, no fabric shrinkage was noted in the APP treated knitted wool fabric but about 5% shrinkage in area was noted in fabric treated with anti-pilling agent.
机译：针织羊毛织物在穿着和使用过程中很容易起丸。在这项研究中，分别使用氦和氧作为载体和反应性气体的等离子射流，在不同的工艺参数下，对常压等离子体（APP）进行了完全干燥处理，从而对针织羊毛织物进行了处理：（i）射流到基材距离; （ii）氧气流速; （iii）治疗时间。本文报告了这些APP处理参数如何影响针织羊毛织物起球性能的研究。经过APP处理后，通过标准的起球测试方法（EN ISO 12945-1; ICI起球盒方法）评估针织羊毛织物的起球性能。另外，为了比较APP（干式处理）和抗起球剂（湿处理）的抗起球效果，对针织羊毛织物进行了常规的湿式抗起球处理（用抗起球剂）。实验结果表明，APP处理可以极大地提高抗起球性能，而不会产生泛黄等不利影响。扫描电镜观察表明，APP处理引起的表面蚀刻效果可能是提高针织羊毛织物抗起球性能的原因之一。各种处理参数可在羊毛纤维表面提供不同程度的蚀刻。同时，在APP处理的针织羊毛织物中没有观察到织物收缩，但是在用抗起球剂处理的织物中发现了约5％的面积收缩。

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