Kraft pulp hornification: A closer look at the preventive effect gained by glucuronoxylan adsorption

摘要: Xylan is known to adsorb irreversibly on cellulose and bleached kraft pulp fibres. This investigation shows that adsorption of birch glucuronoxylan (GX) reduces the degree drying-induced property changes softwood GX was adsorbed at different amounts never-dried fibres, which provided pulps with xylan contents ranging from 67 126 mg/g. By fluorescent labelling GX, followed by subsequent imaging using confocal laser scanning microscopy, it concluded adsorbs fibril surfaces throughout fibre wall enrichment outer surface. Adsorption before drying preserved a considerable part fibre-swelling (water retention value saturation point), specific surface area, wet flexibility observed in state. It therefore suggested cross-linking. The use as hornification inhibitor would provide once-dried increased tensile strength beatability.