Abstract
The mechanism of ionic conduction through polymer coatings has been investigated. The presence of highly permeable areas in the coating (designated as D type areas), impose an electrochemical inhomogeneity which is identified by change in the ionic resistance as measured by DC method. The effect of coating thickness was studied on D type behaviour of coatings. A structural model is proposed to explain the changes in conduction mechanism by variation of coating thickness. Statistical models based on numerical (simulation-based) and analytical (probabilistic model) analysis of D type areas distribution have been advanced to estimate the number of D areas in any given coating based on the percentage of D type. Using these models the number of permeable (D type) areas can be estimated based on the D type percentage of the coating.
Original language | English |
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Journal | Progress in Organic Coatings |
Volume | 87 |
DOIs | |
Publication status | Published - 23 May 2015 |
Keywords
- Ionic conduction
- electrochemical inhomogeneity
- distribution model
- estimation
- D type behaviour