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2. Composition of paper fibres: cellulose, hemicelluloses and lignin
2.1 Cellulose
Cellulose is the most abundant polymer on earth. Its structure is flat and linear, made up of anhydroglucose units (AGU), with a molar mass of 162 g/mol, linked together by β-1,4-glycosidic bonds . Its abundance is around 40-45% in wood, 80-90% in bleached paper kraft pulps, and 92-98% in so-called "dissolving" pulps, produced by purification of bisulfite pulps or kraft pulps made after acid prehydrolysis of wood. Some annual plant pulps, such as cotton linters, have...
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Composition of paper fibres: cellulose, hemicelluloses and lignin
Chemical cooking of wood
Bibliography
Websites
Portals of TAPPI http://www.tappi.org/ and PAPTAC http://www.paptac.ca/fr , North America's leading pulp, paper and board industry technical associations – Major industrial and scientific information and documentation sites: trade journals, e-learning, bookstore...
Standards and norms
- "Pulps – Determination of Kappa number". International Organization for Standardization. TAPPI/ANSI T 236 om-13 standard – "Kappa number of pulp, Test Method. - ISO 302:2004 -
- "Cellulose in dilute solutions – Determination of limiting viscosity number" International Organization for Standardization. Standard TAPPI T 230 om-08 "Viscosity of pulp (capillary viscometer method)". - ISO 5351:1, ISO 5351:2 -
- Essais...
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