A study on the difference in strength between industrially and laboratory-cooked pulp

• The tensile strength levels of industrially produced pulp and corresponding laboratory-cooked pulps were investigated. The industrial pulp had a lower tensile strength, which could not be explained by fibre form or fibre strength. It was concluded that bonding strength was the limiting factor for the tensile strength of the industrial pulp. The industrial pulp, despite of its higher hemicellulose content, had a lower surface charge. The xylan precipitated onto the fibres during the industrial cook was probably more degraded and consequently with lower degree of polymerisation and fewer charged groups.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

KRAFT PULP; SHEET STRENGTH; FIBER STRENGTH; SULFATE PULP; PAPER; QUALITY; JOINT; XYLAN; DRY

Chemistry

Kemi

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)