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Abstract

A new method to measure dislocations and other weak points in spruce pulp fibres involving hydrochloric acid induced cleavage of the fibres and analyses of "length weighted fibre length distribution" has been developed. The method was used to compare fibre lengths and cleavage per fibre for spruce kraft pulp fibres from mill and laboratory pulps used in strength delivery investigations. After HCl treatment of the fibres at 80 degrees C for 4h at pH 0 and FiberMaster analysis, it was found that mill fibres gave shorter fibres compared with laboratory fibres. Thus HCl treatment can be used to differentiate between industrial and laboratory fibres, although both fibre types were made from the same batch of spruce wood chips. Cellulase (EG I + CBH 1, pH 5) acting mainly on the fibre surface did not distinguish between Mill and Lab fibres

Keywords

spruce pulp fibres; dislocations; HCl; cellulase; FiberMaster

Published in

Nordic Pulp and Paper Research Journal
2005, volume: 20, number: 1, pages: 115-120
Publisher: AB SVENSK PAPPERSTIDNING

SLU Authors

  • Ander, Paul

    • Department of Forest Products, Swedish University of Agricultural Sciences

  • Daniel, Geoffrey

    • Department of Forest Products, Swedish University of Agricultural Sciences

UKÄ Subject classification

Forest Science

Publication identifier

  • DOI: https://doi.org/10.3183/npprj-2005-20-01-p115-121

Permanent link to this page (URI)

https://res.slu.se/id/publ/5907