Engineering
8 years ago

Heat treatment of beech wood reveals surprising chemical changes and color impact.

BioResources
Color and FTIR Analysis of Chemical Changes in Beech Wood (Fagus sylvatica L.) after Light Steaming and Heat Treatment in Two Different Environments
Maria Cristina Timar, Anca Maria Varodi, Murat Hacibektasoglu, Mihaela Câmpean

Paper Summary

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The researchers studied how beech wood changes color and chemically after light steaming and heat treatment. Light steaming caused minor chemical changes, while heat treatments led to visible changes in the FTIR spectra. The heat treatments resulted in a decrease in carbonyl absorption and an increase in lignin absorption bands. The ratios of relevant absorption bands showed complex chemical changes, including hydrolytic, oxidative, and condensation reactions. The ThermoWood process showed more advanced modifications compared to the laboratory procedure.