红外光谱法检验热敏纸的研究

The examination of thermal paper by FT-IR

目的:建立一种灵敏、准确、无损的检验热敏纸的方法。方法:利用傅立叶变换红外光谱仪,对收集到的常见的40个不同产地、不同品牌的热敏纸样品,进行了分析检验,得到热敏纸样品的红外光谱图。结果:依据红外光谱图中的吸收峰对热敏纸的主要组成成分加以鉴别。结论:该检验方法不破坏检材,重现性好,可用于鉴定热敏纸物证。

The objective is to establish a sensitive, accurate, non- destructive method for determining thermal paper. With Fourier transform of infrared spectroscopy, 40 samples of thermal paper from different manufacturing areas and different brands were characterized, obtaining the FT-IR spectra for thermal paper samples. The result shows that according to different absorption peaks of infrared spectra, the main constituents of thermal paper samples can be identified. It concluded that this method needs not destroy samples, having good repeatability, and can be used as identifying material evidence of thermal paper.