Water uptake of water-borne paint resin films as studied by impedance spectroscopy and gravimetry

Gabriella Lendvay-Gyorik, T. Pajkossy, Béla Lengyel

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Impedance spectroscopy and gravimetry were employed to characterize alkyd-acrylate and styrene-acrylate water-borne resin film properties during wetting-through (i.e. during water uptake). The results were obtained by (i) measuring the weight of the resin films during soaking in solution and by (ii) measuring impedance of the film between two electrolyte contacts in a two-compartment electrochemical cell. Both methods characterize the effect of dilute solution upon film properties: gravimetry yields a direct measure of water content; impedance spectroscopy enables us to characterize dielectric and ion transport properties of the film. By evaluating the measured data, we were able to distinguish the following processes taking place when a dry resin film got in contact with a solution: (i) penetration of the solution into macro-pores that form transfer paths of the dry resin; (ii) structural changes of the polymer molecules due to swelling; (iii) transport of charge holding species within the polymer. The polymer properties, namely, swelling ability and conductivity were studied and were found to be different for two types of water-borne resins. The physically drying styrene-acrylate resin is more porous and is more apt to swell than the oxidatively drying alkyd-acrylate resin.

Original languageEnglish
Pages (from-to)95-99
Number of pages5
JournalProgress in Organic Coatings
Volume59
Issue number1
DOIs
Publication statusPublished - Apr 1 2007

Fingerprint

Gravimetric analysis
Paint
Resins
Spectroscopy
Water
Polymers
Styrene
Swelling
Drying
Alkyd resins
Electrochemical cells
Transport properties
Contacts (fluid mechanics)
Water content
Electrolytes
Macros
Wetting
Ions
Molecules
acrylic acid

Keywords

  • Alkyd-acrylate
  • Conductivity
  • Dielectrics
  • Polymer
  • Styrene-acrylate
  • Swelling

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Surfaces, Coatings and Films

Cite this

Water uptake of water-borne paint resin films as studied by impedance spectroscopy and gravimetry. / Lendvay-Gyorik, Gabriella; Pajkossy, T.; Lengyel, Béla.

In: Progress in Organic Coatings, Vol. 59, No. 1, 01.04.2007, p. 95-99.

Research output: Contribution to journalArticle

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