Quantitative determination of bound water in cardboard by measurement of dielectric permittivity. (17th January 2018)

• Record Type: Journal Article
• Authors: Ben Ayoub, M W; Georgin, E; Rochas, J F; Hubert, S; Aro, R; Neves, L; Sabouroux, P
• Is Part Of: Measurement science & technology. Volume 29:Number 2(2018:Feb.)
• Publication Date: 2018-01-17
• Subjects: dielectric permittivity -- coaxial cell -- microwave -- radio-frequency -- cardboard -- thermo-coulometer; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aa9908
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: In this study we investigated the complex dielectric permittivity of cardboard with different water contents using a coaxial transmission/reflection technique from 10 MHz to 1.5 GHz. A relaxation process was analyzed to identify the bonding forms that exist in cardboard; this analysis was accompanied by a selective direct thermo-coulometric method. Two different types of bonding of water are found in cardboard (free and bound water) and both can be eliminated at 105 °C. The novelty of this work is the experimental correlation between the relaxation frequency situated in the radio-frequency band and the fraction of bound water in cardboard with a low water content.