Fibers in Pulp

In pulp and paper research, the localization of surface components of wood fibers is of particular interest. Using AFM approaches, the morphology and origin (native or re-precipitated) of lignin, hemicelluloses and extractives on the pulp surface may be elucidated in combination with other surface science techniques. 

Pulp samples can be prepared according to [77], Spruce (Picea abies) is cooked at a liquor-to-wood ratio of 4.5 (supplied by KCL, Finland) at an effective alkali of 5 mol/kg and a sulphidity of 30%. The temperature is raised from 80 to 170°C at l°C/min and kept at 170°C for various times. For AFM imaging the pulp samples are dried on sample holder disks covered by doublesided adhesive tape. 

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Shredding shred-, esp Southern sred- shredded shredding (before 12c) v. The separation of compressed fibers in pulp sheets prior to acetylation in acetate manufacture. 

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