Acidity of selected industrial wood species in Serbia
2016
Popović, Mlađan (Faculty of Forestry, Belgrade (Serbia)) | Điporović-Momčilović, Milanka (Faculty of Forestry, Belgrade (Serbia)) | Gavrilović-Grmuša, Ivana (Faculty of Forestry, Belgrade (Serbia)) | Popović, Jasmina (Faculty of Forestry, Belgrade (Serbia))
The acidity of wood has an important role in many areas of wood applications. Hence, this paper presents a study on the acidity of beech, fir and poplar, as the representa- tives of the most industrially utilized wood species in Serbia. The contents of both the soluble and insoluble acids were determined through the extraction methods with cold distilled water and sodium acetate solution, respectively, followed by the titration with sodium hydroxide solution. The acidity strongly differs among the three wood species used in this research. The amount of insoluble acids was the highest in fir, almost twice as much than in poplar, and about 68 % higher than in fir wood species. Such differences also showed a strong correlation with the gel times of UF adhesive mixes with hot water extracts. Key
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