Comparing the effect of chemical and physical properties on complex electrical impedance of Scots pine wood

Markku Tiitta, Pirjo Kainulainen, Anni M. Harju, Martti Venäläinen, Anne-Marja Manninen, Martti Vuorinen, Hannu Viitanen

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

This study examined the effects of physical (moisture content, water content and wood density) and chemical properties (concentration of phenolics and resin acids) on the electrical properties of Scots pine (Pinus sylvesteris L.) wood specimens. Complex impedance was measured from heartwood and sapwood specimens using frequencies between 5 kHz and 1 MHz. Significant correlation between density and electrical properties was found at high frequencies with sapwood specimens in which the extractive content was low. Moisture content had an effect on electrical properties over the whole frequency range. Electrical properties of heartwood samples with high extractive content were differently affected by the chemical and physical properties. Electrical properties were sufficient to distinguish between the samples from the brown-rot resistant and susceptible Scots pine trees.
Original languageEnglish
Pages (from-to)433-439
JournalHolzforschung
Volume57
Issue number4
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • electrical impedance spectroscopy
  • moisture content
  • density
  • resin acids
  • phenolics
  • decay resistance

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