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首页> 外文期刊>Vlakna a Textil >SHEEP WOOL CAN BE SCOURED SUFFICIENTLY WITHOUT ANY CHEMICALS
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SHEEP WOOL CAN BE SCOURED SUFFICIENTLY WITHOUT ANY CHEMICALS

机译：无需任何化学药品，即可充分搜索羊绒

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摘要

In our search for an alternative method of scouring sheep wool without using any chemicals, we have tested various methods: a) wool scouring in ultrasonic bath filled with tap water at 40℃ under different time modules and, b) simple maceration of wool in unheated tap water. Reference procedure was Soxhlet extraction by dichloromethane. The criteria applied to assess the efficiency of the selected procedures were the mass loss of the scoured sample and the 220 nm absorbance of aqueous extract obtained from the wool after individual scouring steps. Based on the obtained data, it was concluded that the chemical-free water scouring of 20 g wool in ultrasonic bath with the volume of 5 dm~3, at 38 kHz frequency, during 4x10 min and combined with a water exchange every 10 min, provides a very good result. A comparable effect was observed using a simple unheated tap water maceration during 2x7 day intervals with a water exchange after 7 days. Both procedures are more environmentally friendly than the conventional method. Depending on the intended use and required level of wool purity, it is possible to reduce the total time of ultrasonic scouring. While the maceration requires a minimal handling and technical equipment, it is a lengthy process. On the other hand, the scouring with the ultrasonic support takes only few minutes, however, it requires an initial investment, but with a quick economic return. Both methods share a common advantage of the reduced environmental impact.
机译：在寻找一种不使用任何化学物质精炼绵羊毛的替代方法时，我们测试了多种方法：a）在不同时间模块下于40°C的装有自来水的超声波浴中精练羊毛，b）在未加热的条件下将羊毛简单浸渍自来水。参考程序是用二氯甲烷索氏提取。用于评估所选程序效率的标准是经过精练的样品的质量损失和在单个精练步骤后从羊毛中获得的水提取物的220 nm吸光度。根据获得的数据，可以得出结论，超声波浴中20 g羊毛的化学成分为5 dm〜3，频率为38 kHz，在4x10分钟内无化学精练水，每10分钟结合一次换水，提供了非常好的结果。在2x7天的间隔内使用简单的未加热自来水浸软，在7天后进行换水，观察到了类似的效果。两种方法都比常规方法更环保。根据预期的用途和所需的羊毛纯度水平，可以减少超声精练的总时间。尽管浸渍需要最少的处理和技术设备，但这是一个漫长的过程。另一方面，使用超声波支架进行擦洗仅需几分钟，但是，这需要初始投资，但经济回报很快。两种方法都有减少环境影响的共同优势。

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  • 来源
    《Vlakna a Textil》 |2019年第2期|3-8|共6页
  • 作者

    Jana Branisa; Marcel Cvik; Maria Porubska;

  • 作者单位

    Constantine the Philosopher University in Nitra Faculty of Natural Sciences Department of Chemistry Jr. A. Hlinku 1 949 74 Nitra Slovakia;

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