棉与莱赛尔混纺织物定量分析方法研究

Quantitative Methods for Cotton and Lyocell Blended Fabric

棉与莱赛尔纤维混纺织物中纤维含量的定量分析通常采用甲酸-氯化锌法,但该方法耗时长,且莱赛尔纤维含量较高时会出现溶解不完全的情况。文中参考GB/T 16988—2013《特种动物纤维与绵羊毛混合物含量的测定》,使用纤维细度仪来定量分析棉与莱赛尔混纺织物,并对比了甲酸-氯化锌法、纤维细度仪法测试的莱赛尔纤维质量百分率及含量偏差。结果表明:当试样中莱赛尔纤维含量较低时,两种方法结果均在允许偏差范围内,可满足检测需求;当试样中莱赛尔纤维含量较高时,采用纤维细度仪法所测得的莱赛尔纤维含量偏差较小,更加具有可行性。

The quantitative analysis of fiber content in cotton and Lyocell blended fabric usually use formic acid-zinc chloride method, but which is very large time-consuming, and there will be incomplete dissolution while the content of Lyocell is higher. Referring to GB/T 16988--2013 ＂content determination of special animal fiber and wool mixture＂, the method of fiber fineness meter is used to quantitatively analyze cotton and Lyocell blended fab- ric, and the mass percentage and content deviation of Lyocell by fiber fineness meter are compared with that by formic acid-zinc chloride method. The results show that both of the methods can meet the requirements on accept- able deviations when the content of Lyocell is lower; content deviation of Lyocell by fiber fineness meter is small when the content of Lyocell is higher, and the method is more feasible.