Use of Synchrotron Reflectance Infrared Spectromicroscopy as a Rapid, Direct, Nondestructive Method for the Study of Inks on Paper

摘要

The analysis of inks and the paper to which they are applied is of great interest to a broad spectrum of science. From the historian and archaeologist to the forensic scientist, an understanding of ink-paper interactions is essential to the understanding of the ink and its subsequent changes upon application to paper. Determining chemical and other details of ink in a signature, for example, can be an exceedingly difficult task. Modern ballpoint writing inks are frequently mixtures of ink vehicles (used to dissolve the dyes or disperse pigments), dyes and/or pigments, various resins and polymers (to control the viscosity of the ink and to serve as "fillers"), acidic materials (frequently fatty acids that function as lubricants), and surface-active agents. Additionally, other organics may be used to control corrosion or improve solubility of the dyes and pigments.