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Licensed Unlicensed Requires Authentication Published by De Gruyter July 18, 2006

Kraft pulp from budworm-infested Jack pine

J.Y. Zhu and Gary C. Myers
From the journal

Abstract

This study evaluated the quality of kraft pulp from budworm-infested jack pine. The logs were classified as merchantable live, suspect, or merchantable dead. Raw materials were evaluated through visual inspection, analysis of the chemical composition, SilviScan measurement of the density, and measurement of the tracheid length. Unbleached pulps were then refined using a laboratory disk refiner. The mechanical and optical properties of handsheets made from the refined pulps were evaluated. Although budworm galleries may affect the physical integrity of the wood, they have no effect on pulp quality. Blue stain did not affect the handsheet brightness. The results indicate that merchantable dead jack pine trees are acceptable for kraft pulp production, with equivalent pulp yield.

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Corresponding author. USDA Forest Service, Forest Products Laboratory, One Gifford Pinchot Drive, Madison, WI 53726-2398, USA Tel.: +1-608-2319520 Fax: +1-608-2319592

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Published Online: 2006-07-18
Published in Print: 2006-07-01

©2006 by Walter de Gruyter Berlin New York