What is the chemical composition of cotton?
Cotton is a cellulosic fiber with the monomer (basic unit) as cellobiose. Cellobiose is composed of two glucose units joined together by (1-4) glycosidic linkage and is obtained as a result of partial hydrolysis of cellulose. A cotton fiber contains about 88-96% of cellulose, and other substances such as protein, pectin, oil and waxes are present in small quantities. A cotton fiber consists of 5,000 cellobiose units and thus 10,000 glucose molecules.