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Reflectance FTIR Microspectroscopy for Studying Effect of Xylan Removal on Unbleached and Bleached Birch Kraft Pulps
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M. Ristolainen
Published/Copyright:
June 1, 2005
Summary
The effect of the partial removal of xylan on unbleached and bleached birch kraft pulps was investigated by Fourier transform infrared (FTIR) microspectroscopy and the resulting data were analyzed by multivariate data analysis, i.e., principal component analysis (PCA) and maximum likelihood principal component analysis (MLPCA). Isolated model substances (xylan, cellulose and lignin) were used to calibrate these methods. Clear chemical changes in the relative proportions of the main constituents and functional groups on the pulp fiber surface were observed as a function of the amount of xylan removed. In addition, due to the partial removal of xylan, indications of some physical changes were observed.
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Published Online: 2005-06-01
Published in Print: 2002-08-26
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Effect of Growth Rate on Fibre Characteristics in Norway Spruce (Picea abies (L.) Karst.)
- Techniques for Measuring Growth Stress on the Xylem Surface Using Strain and Dial Gauges
- Use of Soft Rot Cavities to Determine Microfibril Angles in Wood; Advantages, Disadvantages and Possibilities
- Surface Roughness and Color Change of Copper-Amine Treated Red Maple (Acer rubrum) Exposed to Artificial Ultraviolet Light
- Differences in Resin Acid Concentration between Brown-Rot Resistant and Susceptible Scots Pine Heartwood
- Antioxidant Activity of Abietane-Type Diterpenes from Heartwood of Taiwania cryptomerioides Hayata
- Hydrothermolysis of Flavonoids in Relation to Steaming of Japanese Larch Wood
- Impact of Pulping Conditions on FORMACELL Aspen Lignin: Investigation of Methoxyl and Ester Groups, Carbohydrates, Molar Mass and Glass Transition Temperatures
- Ethanol-Enhanced Alkaline Pulping of Arundo donax L. Reed: Influence of Solvent on Pulp Yield and Quality
- Reflectance FTIR Microspectroscopy for Studying Effect of Xylan Removal on Unbleached and Bleached Birch Kraft Pulps
- Structure of Thermally Modified Wood Studied by Liquid State NMR Measurements
- Detection on Incipient Fungal Attack in Wood Using Magnetic Resonance Parameter Mapping Wood Studied by Liquid State NMR Measurements
- Wood Density Determination by X- and Gamma-Ray Tomography
- The Influence of Wood Specimen Surface Coating on Moisture Movement during Drying
- Study of the System Wood – Coating Material. Part 2.Wood – Solid Coating Material
- Flake Drying Temperature Affects Mat Properties during Pressing
