Results 151 to 160 of about 924 (196)

Improvement in the Thermomechanical Properties and Adhesion of Wood Fibers to the Polyamide 6 Matrix by Sequential Ball Milling Technique. [PDF]

ACS Sustain Chem Eng
Jalaee A, Foster EJ.
europepmc   +1 more source

High-Yield Cellulose Nanocrystals from Bleached Eucalyptus Fibers via Maleic Acid Hydrothermal Treatment and High-Pressure Homogenization. [PDF]

Biomacromolecules
Najahi A, Delgado-Aguilar M, Putaux JL, Boufi S.   +3 more
europepmc   +1 more source

Effect of the counterion on the beatability of unbleached kraft pulps

Nordic Pulp & Paper Research Journal, 2000
The objective of this investigation was to demonstrate the effect of the counterion on the energy consumption during a beating process and on the resulting strength properties of handsheets.
Lars-Åke Hammar, Marie Bäckström, Myat Htun   +2 more
openaire   +2 more sources

Surface Characterization of Unbleached Kraft Pulps by Enzymatic Peeling and ESCA

hfsg, 1996
Specific enzymes hydrolyzing pulp carbohydrates can be used for characterization of pulp fibres. By combining enzymatic peeling of fibre hemicelluloses with novel techniques of surface analysis, such as ESCA, new information can be obtained on the location of different components, i.e. xylan, glucomannan and lignin on the fibre surfaces.
Carlsson, Göran, Viikari, Liisa, Ström, Gunnar, Buchert, Johanna   +4 more
core   +4 more sources

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Residual Lignin in Unbleached Kraft Pulp. Part 2. -Analysis of Unbleached Kraft Pulp by New Permethylation Method-

Journal of Wood Chemistry and Technology, 1987
Abstract Unbleached kraft pulp (UKP), its residue after extraction with concentrated alkali (α-UKP), bleached kraft pulp prepared from UKP (BKP) and its residue after extraction with concentrated alkali (α-BKP) were permethylated with powdered NaOH and CH3I in their SO2-diethylamine (DEA)-dimethylsufoxide (DMSO) solutions.
Akira Isogai, Atsushi Ishizu, Junzo Nakano   +2 more
exaly   +2 more sources

Partial delignification of unbleached kraft pulp with ligninolytic fungi

Biotechnology Letters, 1979
Unbleached kraft pulp is partially delignified on incubation under specified conditions with ligninolytic fungi, thereby decreasing requirements for bleaching chemicals. Studies withPhanerochaete chrysosporium demonstrated important effects of nutrient nitrogen and molecular oxygen concentrations. Possible approaches to rate enhancement are suggested.
T Kent Kirk, Kirk T Kent
exaly   +2 more sources

Wet strength improvement of unbleached kraft pulp through laccase catalyzed oxidation

Enzyme and Microbial Technology, 2001
Previous investigations have shown that laccase catalyzed oxidation of lignin containing wood fibers can enhance the strength of medium density fiberboards. In the present work it was investigated if laccase treatment had any impact on the tensile strength of a high yield unbleached kraft pulp. Treatment with laccase alone had only a very little effect
Claus Felby
exaly   +3 more sources

Surface Characterization of Unbleached and Oxygen Delignified Kraft Pulp Fibers

Journal of Wood Chemistry and Technology, 2003
The chemical and morphological surface properties of different unbleached and oxygen delignified softwood kraft pulp fibers were evaluated by using different ESCA and SEM techniques. The results of the different techniques have revealed that the surface of unbleached and oxygen delignified kraft pulp fibers has a higher content of lignin and in some ...
Magnus Paulsson, Anette Heijnesson Hultén   +1 more
exaly   +2 more sources