Spectroscopic Methods to Investigate Liquid–Porous Material Interactions: An Overview of Optical and Electrical Impedance Techniques

• Published in: Transport in porous media Vol. 115; no. 3; pp. 603 - 629
• Main Author: Tomozeiu, Nicolae
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.12.2016; Springer Nature B.V
• Subjects: Civil Engineering; Classical and Continuum Physics; Earth and Environmental Science; Earth Sciences; Electrical impedance; Evaporation; Geotechnical Engineering & Applied Earth Sciences; Hydrogeology; Hydrology/Water Resources; Industrial Chemistry/Chemical Engineering; Liquids; Mixtures; Optics; Penetration; Porous materials; Printing industry; Reflectometry; Spectroellipsometry; Substrates; Porous paper; Optical spectroscopy; IR-attenuated total reflection; Electrical impedance spectroscopy; Spectroellipsometry; Liquid penetration; Reflectometry
• ISSN: 0169-3913; 1573-1634
• DOI: 10.1007/s11242-016-0683-1

An overview of spectroscopic methods to investigate physical processes specific to the water-based ink/substrate interaction is made in this work. Optical techniques (as VIS reflectometry, IR-ATR and spectroellipsometry) and electrical impedance spectroscopy have been employed to study physical phenomena that describe the interaction between water-based mixtures and the substrate for printing; the latter can be absorbent (porous) or non-absorbent of liquid. Therefore, evaporation of aqueous mixtures and/or liquid penetration in porous paper are the main subjects of these studies. After brief introduction in each method, examples of various particular cases are presented and analyzed: evaporation of pure liquids and mixtures, water penetration into paper of various thicknesses, the penetration of different liquids into plain paper. The method of spectroellipsometry was used to characterize the coating of the coated paper for printing industry.