2. Wood composition and properties
2.1 Chemical composition of wood
Wood, an organic material, is composed of three main polymers: cellulose, lignin and hemicelluloses.
Cellulose (figure 9 ), a high-molecular-weight polymer (DP 10000) whose basic element is a cellobiose unit (two glucoses), is present in fibrillar form and forms the structure of the wood cell wall. It accounts for 40-50% of dry matter mass.
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Wood composition and properties
Wood energy recovery
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