纸张被溶液浸泡老化的变化规律研究

Research on the Artificial Aging of Paper by Liquid Immersion

目的研究纸张在水及常见溶液中被浸泡老化条件下所发生的变化及规律。方法对纸张分别用纯水、茶水、5%氢氧化钠溶液和5%硫酸溶液进行溶液浸泡老化实验。结果纸张被不同溶液浸泡老化后,和无浸泡条件纸张相比,在表观特征、荧光强度和反射光谱特征等方面均有不同程度的变化。结论此实验结果可为检验可疑文件是否被溶液浸泡老化提供依据。

Objective To study the changes and rules of print paper aged by being soaked in water and other common solutions.Method Sheets of print paper were soaked into different liquid agents including pure water,tea,5% sodium hydroxide solution and 5% sulfuric acid solution for a fixed period of time.Results Soaked paper was more or less different from untreated paper in appearance,fluorescence intensity and reflectance spectra.Conclusion The study results could be used for judgment of artificial aging with liquid immersion of questioned documents.