吐温与纤维相互作用的太赫兹波谱分析

摘要

本文利用太赫兹时域光谱技术（THz-TDS）对不同温度处理的Tween 60以及吐温系列表面活性剂与纤维的混合物进行了光谱检测,得到了经过不同温度处理的Tween 60以及吐温系列表面活性剂与纤维的混合物在0.2-1.5 THz频段下的太赫兹光谱。研究发现：Tween 20、60、80的吸收与折射谱均存在明显的差异,证明太赫兹时域光谱技术可用于区分鉴别吐温系列表面活性剂的种类;经过不同温度处理的Tween 60的吸收谱与折射率谱发生了明显的变化,说明加热可以改变Tween 60的结构,旧键的断裂引起了针对不同温度的特征量的明显区别;纤维与吐温系列表面活性剂的混合物的光谱分析表明,吐温与纤维的混合造成了二者结构上的变化,二者之间产生了相互作用,进一步研究发现吐温的种类以及混合物放置的时间均会对该相互作用产生影响。%The tweens,fiber,the mixture of tweens and fiber,and the tween60 heated at different temperatures were measured using terahertz time-domain spectroscopy（THz-TDS） in the frequency range extending from 0.2 to 1.5 THz.The absorption spectra and refractive indices of tween 20,60 and 80 exhibit significantly difference,it was indicated that the THz-TDS technology can be used to identify the species of tween surfactant.Then,the spectra of tween60 heated at several temperatures was changed obviously,which means that the heating temperatures affect the structures of tween60.The fracture of the original bonding of tween60 led to the obvious difference of characteristic factors at different temperatures.The variety of spectra of mixtures indicated the effect of interaction between tweens and fiber on their structures.The further research showed that this interaction can be influenced by the species of tween and sample store time.