Wood is a heterogeneous, hygroscopic, cellular and anisotropic material. It consists of cells, and the cell walls are composed of micro-fibrils of cellulose (40% – 50%) and hemicellulose (15% – 25%) impregnated with lignin (15% – 30%). COUNT 5
QSN1 Along with hygroscopic, cellular, and anisotropic, how is the material of wood described? ANS1 heterogeneous QSN2 What does wood consist of? ANS2 cells QSN3 What part of wood's cells are composed of cellulose and hemicellulose? ANS3 walls QSN4 What makes up 40-50% of the cell walls in wood? ANS4 cellulose QSN5 What substance is hemicellulose impregnated with? ANS5 lignin