Skip to Main Content
Improvements in decay resistance based on moisture exclusionAuthor(s): Roger M. Rowell; Rebecca E. Ibach
Source: Mol. Cryst. And Liq. Crsyt., 2000. 353: 23-33.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
PDF: Download Publication (93.0 KB)
DescriptionMoisture content has an effect on the biological decay of wood. The literature states that serious decay occurs when the moisture content of wood is above the fiber saturation point (FSP), which is the measurement of the moisture content of wood when the cell walls are saturated and the cell cavities free from water (average 30%). We can chemically modify wood hydroxyls by various treatments (i.e., acetylation, isocyanates, and epoxides) which result in the lowering of the FSP. If we modify the availability of water in the cell wall, we can reduce or eliminate biological degradation. So is biological protection as simple as removing a water molecule at the glycosidic hydrolysis site required by the degrading enzyme? Investigations are underway to chemically modify wood and fiber samples and evaluate them biologically by the soil block test, as well as by the FSP and the equilibrium moisture content (EMC). EMC is the moisture content of wood at any given relative humidity and temperature. Potential correlation between moisture exclusion and biological protection will be discussed.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRowell, Roger M.; Ibach, Rebecca E. 2000. Improvements in decay resistance based on moisture exclusion. Mol. Cryst. And Liq. Crsyt., 2000. 353: 23-33.
KeywordsChemical modification, wood decay, wood preservation, fiber saturation point, equilibrium moisture content
- The effect on biological and moisture resistance of epichlorohydrin chemically modified wood
- Decay protection based on moisture exclusion resulting from chemical modification of wood
- Chemical modification
XML: View XML