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1. PROPERTIES OF WOOD AND PULP FIBERS FROM LODGEPOLE PINE (PINUS CONTORTA) AS COMPARED TO SCOTS PINE (PINUS SYLVESTRIS)

Author

Inese Sable,, Uldis Grinfelds,, Aris Jansons,, Laura Vikele,, Ilze Irbe,, Anrijs Verovkins,, and Arnis Treimanis

Subjects
Wood density, Kraft pulp fibers, Strength parameters, Introduced tree species, Biotechnology, TP248.13-248.65
Abstract

In this study, the relationship between the properties of the wood and kraft pulp fibers as well as paper characteristics of 27-year-old trees, lodgepole pine (Pinus contorta) and Scots pine (Pinus sylvestris), was assessed. All trees had been grown in Latvia, within the same forest type, Myrtillosa. Wood density, year ring width, chemical composition and cross-sectional cell wall dimensions were measured. Fiber characteristics were determined, and handsheets were made for all samples from unbeaten kraft pulp. The results showed that the amount of latewood had a positive correlation with wood density for both species and with further positive impact on the paper burst index. Also, slight differences in cross-sectional dimensions were observed. Lodgepole pine provided paper with higher burst strength than Scots pine. Since the former is of higher density, less wood per volume is needed to produce a ton of pulp, and results showed a higher pulp yield in the case of lodgepole pine.

Published
2012

2. PROPERTIES OF WOOD AND PULP FIBERS FROM LODGEPOLE PINE (PINUS CONTORTA) AS COMPARED TO SCOTS PINE (PINUS SYLVESTRIS)

Author

Aris Jansons, Uldis Grinfelds, Ilze Irbe, Laura Vikele, Inese Sable, Arnis Treimanis, and Anrijs Verovkins

Subjects
Pinus contorta, Environmental Engineering, Strength parameters, lcsh:Biotechnology, Bioengineering, engineering.material, Positive correlation, complex mixtures, Introduced tree species, lcsh:TP248.13-248.65, Waste Management and Disposal, biology, Pulp (paper), fungi, Scots pine, Pulpwood, biology.organism_classification, Pulp and paper industry, Horticulture, Kraft process, Kraft pulp fibers, engineering, Environmental science, Wood density, Kraft paper, Woody plant
Abstract

In this study, the relationship between the properties of the wood and kraft pulp fibers as well as paper characteristics of 27-year-old trees, lodgepole pine (Pinus contorta) and Scots pine (Pinus sylvestris), was assessed. All trees had been grown in Latvia, within the same forest type, Myrtillosa. Wood density, year ring width, chemical composition and cross-sectional cell wall dimensions were measured. Fiber characteristics were determined, and handsheets were made for all samples from unbeaten kraft pulp. The results showed that the amount of latewood had a positive correlation with wood density for both species and with further positive impact on the paper burst index. Also, slight differences in cross-sectional dimensions were observed. Lodgepole pine provided paper with higher burst strength than Scots pine. Since the former is of higher density, less wood per volume is needed to produce a ton of pulp, and results showed a higher pulp yield in the case of lodgepole pine.

Published
2012
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