Christie, JHSylvander, SRWoodhead, Ian MIrie, Kenji2012-08-122012-08-122003Christie, J.H., Sylvander, S.R., Woodhead, I.M. & Irie, K. (2003). The spectroscopic impedance of cellophane. In Proceedings of the Fifth International Conference on Electromagnetic Wave Interaction with Water and Moist Substances, Rotorua, N. Z. (p. 129-136). International Society for Electromagnetic Aquametry (ISEMA).https://hdl.handle.net/10182/4751Paper presented at the Fifth International Conference on Electromagnetic Wave Interaction with Water and Moist Substances, 2003, Rotorua, N. Z.The electrical impedance of cellophane has been measured as a function of moisture content and temperature in the frequency range 10⁻³ – 10⁵ Hz. The data show a very strong dependence on moisture content, which is a typical characteristic of hygroscopic solids, and at low frequencies, remarkable constant phase angle spectra were obtained. Making use of the hopping model of conduction in non-crystalline solids, we explain the measured spectra. The model treats absorbed water as an impurity in the cellophane and conduction is predicted to occur by temperature-activated proton hopping between water molecules. We also propose that this model is widely applicable to prediction of the low frequency dielectric properties of hygroscopic solids.enCopyright © The Authors.protonhoppingmoistureconductivityConference Contribution - publishedANZSRC::030606 Structural Chemistry and Spectroscopy