Li Ji-Min, Wang Yan-Ji, Wang Jing-Han, Yao Li-Juan, Zhang Biao
Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2009 Jun;29(6):1521-5.
A new method of fast identification of copy papers by Fourier transform infrared spectroscopy (FTIR) was developed. The kinds of filler and the cellulosic degree of crystallinity were analyzed by FTIR, and the ageing curves of cellulosic paper were studied with heating and ultraviolet light. The cellulosic degree of crystallinity was showed by the ratio of absorbance at 1 429 cm(-1) to that at 893 cm(-1), the standard deviation of different brands of copy papers was 0.010 7-0.016 0, and the standard deviation of the same brands of copy papers was 0.014 8. The kinds of filler and the cellulosic degree of crystallinity were different in copy papers from different brands of different manufacturing plants, different brands of same manufacturing plants and different manufacturing times of the same brands from the same manufacturing plants, and the curves of ageing were different with heating and ultraviolet light. The results of fast identification of copy papers by FTIR are satisfactory.
开发了一种通过傅里叶变换红外光谱（FTIR）快速鉴定复印纸的新方法。利用FTIR分析了复印纸中填料种类和纤维素结晶度，并研究了纤维素纸张在加热和紫外线作用下的老化曲线。纤维素结晶度由1429 cm(-1)处与893 cm(-1)处的吸光度比值表示，不同品牌复印纸的标准偏差为0.010 7 - 0.016 0，同一品牌复印纸的标准偏差为0.014 8。不同生产厂家不同品牌、同一生产厂家不同品牌以及同一生产厂家同一品牌不同生产时间的复印纸，其填料种类和纤维素结晶度不同，加热和紫外线作用下的老化曲线也不同。FTIR对复印纸进行快速鉴定的结果令人满意。
