Assessing Water Content in Polymers Using Capacitive Sensors: Impact of the Water Distribution

EasyChair Preprint no. 1905

Abstract

Capacitance analysis has been used as a sensing technique to evaluate moisture content in polymers. This approach relies on the dielectric constant dependence upon free water concentration. In this work, we anticipate that the way water is distributed inside polymer pellets may change the apparent permittivity, even though the total amount of water is unchanged. This bias roots in the non-linear dependence of the dielectric constant upon water concentration. In this context, an analytical model of diffusion in cylindrical body geometry is used to predict the relative error generated when performing current-voltage (CV) experiments.

Keyphrases: capacitance, dielectric constant, diffusion moisture, non-linearity, polymer

@Booklet{EasyChair:1905,
  author = {Rosane Moura Dos Santos and Catherine Dehollain and Marco Mattavelli and Diego Barrettino and Jean-Michel Sallese},
  title = {Assessing Water Content in Polymers Using Capacitive Sensors: Impact of the Water Distribution},
  howpublished = {EasyChair Preprint no. 1905},

  year = {EasyChair, 2019}}