Abstract
ABSTRACT This study aims to determine the sorption isotherms of three tropical woods from Cameroon to understand the conditions for their use and drying. The equilibrium moisture contents were experimentally determined using saturated salt solutions. Some anatomical parameters were also measured to assess the influence of the structure of these woods on their sorption behaviour. Among the sorption models tested, the Guggenheim-Anderson-de Boer model is the one that best fits the experimental points. Our results also reveal a strong correlation between EMCs and the size and number of anatomical parameters. Indeed, up to 40°C, Sipo which has the lowest wood density and larger vessel sizes and rays, contains more water at equilibrium that the two other woods. When temperatures increase above 50°C, Sapelli becomes more hygroscopic due to the expansion of its lumen cells. These findings highlight the need for specific data on the sorption behaviour of Central African woods, to efficiently manage their drying and use.
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