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The Effect Of Acetone Extraction On The Disruptive Shear Stress In Pine Thermomechanical Pulps


February 1, 2010
By Pulp & Paper Canada

Effet de l’extraction d’actone sur la contrainte de cisaillement disruptive dans les ptes thermomcaniques de pin

Effet de l’extraction d’actone sur la contrainte de cisaillement disruptive dans les ptes thermomcaniques de pin

Abstract: The effect of extractives on the disruptive shear stress in pine thermomechanical pulps was studied using the equipment of shear and compression. Compressibility and the disruptive shear stress in first thinning pine and sawmill pine thermomechanical pulps were studied at a temperature of 120C. Additional experiments were done using the pulp from which extractives were removed by acetone extraction. The result of the study was that removal of extractives does not change the compressibility or disruptive shear stress in pulp.

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Paper presented at the 2007 International Mechanical Pulping Conference, June 1,2007.

Keywords: EXTRACTIVES, ACETONE EXTRACTION, THERMOMECHANICAL PULP, TMP, COMPRESSIBILITY, DISRUPTIVE SHEAR STRESS.

Full manuscript available at www.paptac.ca.


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