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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Building and Fire Sciences

Project Title :  Fundamental research on heat and mass transfer in wood products
Project Number : FPL-4716-3A
Status : NEW
Start Date : 01-23-2015
End Date : 01-22-2020

View the 30 publications associated with this project.

Sam ZelinkaPrincipal Investigator:
Samuel L. Zelinka

Non Technical Summary
As a building material, wood fails because it gets wet. Wood exhibits swelling upon moisture uptake and shrinkage upon drying, and these cyclical moisture changes lead to internal stresses and can eventually form splits and checks within the wood. When there is an abundance of moisture in the wood, it is susceptible to microbial growth, fungal decay, corrosion of embedded metals, and chemical depolymerization from certain ions and free radicals. This problem area performs fundamental research on how and why wood gets wet so that new strategies for wood protection can be developed.

Objectives Summary
The objective of this problem area is to conduct fundamental research on heat and mass transfer in wood so that a mechanistic, physical understanding can be used to develop new methods of making wood more durable and fire resistant.

Approach Summary
This objective requires the development of new, unconventional research techniques. Since water affects wood at multiple length scales (from 10 superscript -9 m to 10 superscript 1 m), the research needs to be conducted across multiple length scales as well as research aimed at understanding the relationship between the length scales.

Publications associated with this Project

Publication YearTitleDate Posted
2016A solution thermodynamics definition of the fiber saturation point and the derivation of a wood-water phase (state) diagram10/04/16
2018Acetylation increases relative humidity threshold for ion transport in wood cell walls – a means to understanding decay resistance11/13/18
2015Anatomically informed mesoscale electrical impedance spectroscopy in southern pine and the electric field distribution for pin-type electric moisture metres07/07/15
2018Apparatus for gravimetric measurement of moisture sorption isotherms for 1-100 g samples in parallel09/10/18
2016Cell wall domain and moisture content influence southern pine electrical conductivity09/15/16
2016Corrosion of metals in treated wood examined by synchrotron based xanes and XFM10/04/16
2016Distribution and oxidation state of copper in the cell walls of treated wood examined by synchrotron based XANES and XFM03/27/17
2017Effect of weight percent gain and experimental method on fiber saturation point of acetylated wood determined by differential scanning calorimetry07/17/18
2019Effects of Moisture on Diffusion in Unmodified Wood Cell Walls: A Phenomenological Polymer Science Approach03/16/20
2020Effects of wood moisture content and the level of acetylation on brown rot decay03/12/20
2020Evaluation of previous measurements of water vapor sorption in wood at multiple temperatures07/29/20
2015Force-displacement measurements of earlywood bordered pits using a mesomechanical tester10/07/15
2018Fungal–copper interactions in wood examined with large field of view synchrotron-based X-ray fluorescence microscopy07/26/18
2019Kinetics of water vapor sorption in wood cell walls: state of the art and research needs09/26/19
2020Limiting polysaccharide motion protects wood from decay06/30/20
2020Measurement of moisture-dependent ion diffusion constants in wood cell wall layers using time-lapse micro X-ray fluorescence microscopy08/21/20
2018Myth versus reality: do parabolic sorption isotherm models reflect actual wood–water thermodynamics?03/12/19
2016Not just lumber--Using wood in the sustainable future of materials, chemicals, and fuels10/04/16
2014Preserving ancient artifacts for the next millennia04/08/15
2018Quantifying and reducing errors in equilibrium moisture content measurements with dynamic vapor sorption (DVS) experiments09/14/18
2017Rheometry of coarse biomass at high temperature and pressure10/06/17
2018Role of transport in wood damage mechanisms – WSE 2017 keynote lecture09/27/18
2017Short hold times in dynamic vapor sorption measurements mischaracterize the equilibrium moisture content of wood09/20/17
2015Subcellular Electrical Measurements as a Function of Wood Moisture Content06/19/15
2017Synchrotron-based X-ray fluorescence microscopy enables multiscale spatial visualization of ions involved in fungal lignocellulose deconstruction03/01/17
2019The parallel exponential kinetics model is unfit to characterize moisture sorption kinetics in cellulosic materials04/11/19
2019The processing of Pinus radiata: pore size distribution changes in the cell wall structure studied by pressure plate technique and mercury intrusion porosimetry08/30/19
2016The role of chemical transport in the brown-rot decay resistance of modified wood08/05/16
2015The Role of Chemical Transport in the Decay Resistance of Modified Wood. In: M11/18/15
2015Threshold for ion movements in wood cell walls below fiber saturation observed by X-ray fluorescence microscopy (XFM)05/27/15

Project Summaries last modified: 02-17-2017