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Sergei R. Loskutov

Analysis of the Wood Sorption Isotherm Using the Theory of Micropore Volume Filling

Dubinin's theory of micropore volume filling was used to describe the isotherms of water resorption and desorption by natural wood of twelve species and chemically modified birch wood. The analysis showed that each wood sample is characterized by its own pair of the main equation parameters. The correlation between these parameters was also determined. The resorption/desorption characteristic which is a combination of the main equation parameters of the above mentioned theory was revealed to be invariable for all the studied examples of natural wood. It can be used for estimation of wood substance disturbances caused by chemical modification and probably anthropogenic factors effecting during wood formation. The thermal coefficient as a function of relative vapor pressure was found. This dependence and the main equation of the theory of micropore volume filling can be used to calculate sorption equilibrium for wood/water system under the limited set of experimental data.

Holzforschung, Walter de Gruyter

Print ISSN: 0018-3830
Volume: 54, 04/2000
Pages: 301 - 304

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