Refining Effects on Various Chemical Pulp Types

1 Refining Effects on Various Chemical Pulp Types 

The major effects of refining (Page, 1989 Smook, 1989) on individual fibres are summarized in Table 13.1. The first effect is the partial removal of the primary cell wall. Removal of this wall exposes the secondary wall and promotes hydration and fibre flexibility. The further action of fibrillation involves loosening of the fibrils and the raising of finer micro-fibrils 

Removal of primary wall formation of fibre debris or fines 

Penetration of water into cell wall ( bruising or swelling ) 

Breaking of some intra-fibre hydrogen bonds replacement by water-fibre-hydrogen bonds 

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