红外光谱差减技术在纺织品定性分析中的应用  

Application of infrared spectroscopy subtract technology on textile qualitative analysis

作　　者：陆永良[1] 沈维[1] 刘艳[1] 

机构地区：[1]国家纺织产品质量监督检验中心(江阴),江苏江阴214434

出　　处：《上海纺织科技》2010年第7期1-4,共4页Shanghai Textile Science & Technology

摘　　要：介绍了傅里叶红外光谱仪及其衰减全反射附件的工作原理和优缺点。不同的纤维具有不同的化学基团和不同的分子结构,因而在红外光谱中会出现不同的特征吸收。对已知纤维的红外光谱图与未知纤维的红外光谱图进行比较,就可以对纤维的种类进行定性。对含有多组分纤维的混纺织物,由于其各组分特征基团之间存在相互干扰,分子内基团的红外吸收会受到邻近基团及整个分子其他部分的影响,所以各纤维原有的特征吸收峰会在一定范围内波动,使得原有纤维特征峰的选择变得不容易,这也是目前红外光谱仪不能大量有效应用在纤维定性分析上的主要原因之一。文章依据红外光谱吸光度的加和性原理,尝试利用红外光谱的差减技术解决这一难题。Principle and advantages and disadvantages of the Fourier transform infrared spectroscopy and the attenuated total reflectance accessory are presented in this paper. Differrent fibres have differrent chemical groups and differrent molecular formulas, so different infrared spectroscopys are achieved. Comparison of known fibre infrared spectroscopy and that of unknown fibre can be used to qualitatively analyzed the fiber variety. Multi - component fiber contained in blended fabric can interfere each other, so the infrared spectroscopy of each fiber group would change in some way, which makes the unknown fibre qualitative research difficult. Base on the absorbency additivity, infrared spectrometer subtract technology is used to solve this difficult problem in this paper.

关 键 词：纺织品 测试 傅里叶红外光谱仪 纤维定性 差减技术 吸光度加和性 

分 类 号：TS107[轻工技术与工程—纺织工程]