Development of novel identification method for textile fibers by Terahertz spectroscopy

我们开发了一种新的区分技术，大多数纺织纤维使用太赫兹（THz）透射光谱。作为示范，几种植物来源的纤维，动物纤维和人造纤维在77 K下研磨，并在0.5 - 10 THz范围内通过THz光谱进行了检查。大多数纺织纤维的吸收光谱可通过THz光谱法区分，即使是相同类别或种类的纤维。这种技术的优点是它对纤维的结构差异敏感，即使它们主要由相同的成分组成。作为一个例子，在植物源纤维和再生纤维素纤维类别中的纤维素纤维的太赫兹光谱显示出可识别的特征。

We developed a novel differentiation technique for most textile fibers using terahertz (THz) transmittance spectroscopy. As demonstrations, several kinds of plant-derived fibers, animal fibers, and artificial fibers were milled at 77K, and were examined by THz spectroscopy in the range from 0.5 to 10 THz. Absorption spectra of a majority of textile fibers are distinguishable by THz spectroscopy, even for fibers in the same category or species. The advantage of this technique is its sensitivity to the structural differences of the fibers, even if they consist largely of the same components. As an example, the THz spectra of cellulosic fibers in the category of plant-derived fibers and regenerated cellulose fibers showed an identifiable character.