Cellulose structure: A review

Cellulose is a native polymer, the most abundant on Earth, with an extended structure involving beta -1,4-glucosidic linkages between the anhydrogluco se repeating units. This is explained by the presence of three hydroxyl gro ups with different polarities, secondary OH at the C-2, secondary OH at the C-3 and primary OH at the C-6 position, and, accordingly, by the formation of strong various intermolecular and intramolecular hydrogen bonds.