Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Subcellular Electrical Measurements as a Function of Wood Moisture Content

Source: Proceedings of the 58th International Convention of Society of Wood Science and Technology, June 7-12, 2015 – Grand Teton National Park, Jackson, Wyoming, USA. pp. 568-576.

Author(s)Zelinka, Samuel L.; Quintana, José L. Colon; Glass, Samuel V.; Jakes, Joseph E.; Wiedenhoeft, Alex C.

Publication Year: 2015  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4707-2B   FPL-4715-3   FPL-4716-3A

Abstract: The percolation model developed by Zelinka et al. was based upon macroscale measurements of the electrical conductivity and implicitly treats the wood material as homogenous. The transport mechanism proposed by Jakes et al. depends upon a moisture induced glass transition occurring in the hemicelluloses. This theory suggests that there are likely differences in the threshold moisture content for moisture transport between different regions in the cell wall. For instance, the secondary cell wall contains cellulose microfibrils, amorphous cellulose, hemicelluloses, and lignin, where hemicelluloses are preferentially oriented along the microfibrils (Hafren et al. 2000; earlywood. The resistance decreased with increasing relative humidity in all locations. The resistance decreased more rapidly with relative humidity in the S2 layer than in the middle lamella. These results give insight into how some moisture-dependent wood properties affecting ion movement may be partitioned across cell wall layers.

Keywords: wood-moisture relations; electrical properties of wood; timber physics; percolation theory; wood damage mechanisms

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 390 kb(s)

Date posted: 06/19/2015

This publication is also viewable on Treesearch:  view
RITS Product ID: 73108
Current FPL Scientists associated with this product (listed alphabetically)
Glass, Samuel V.
Research Physical Scientist
Jakes, Joseph
Research Materials Engineer
Wiedenhoeft, Alex C.
Research Botanist
Zelinka, Samuel L.
Materials Research Engineer

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »

Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »

Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »

Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »