Interaction of Copper-Containing Preservatives with Wood. Part 1. Mechanism of the Interaction of Copper with Cellulose
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N. Druz
Summary
In the present work, the state of the copper ions absorbed by cellulose from aqueous solutions with different pH values has been studied by electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray analysis (EDXA) methods. It has been shown that the curve of copper sorption has a S-like shape characteristic for weak acid sorbents. At all pH values in ESR-spectra, an anisotropic Cu(II)-signal is registered. At pH > 4, the anisotropy of ESR-spectra decreases. At pH = 10, complexes connected by exchange interactions and diamagnetic clusters are formed. After the leaching of specimens, the ESR-signal practically disappeared. The decrease of the copper content in cellulose did not correlate with the change of the integral intensity of the spectra. The changes in ESR-spectra of copper-containing cellulose after leaching were explained by the formation of the Cu(II) diamagnetic clusters.
Copyright © 2001 by Walter de Gruyter GmbH & Co. KG
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- Dielectric Relaxation Based on Adsorbed Water in Wood Cell Wall under Non-Equilibrium State 2
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- Walter Liese 75 Years Young
- Literature Reports
Articles in the same Issue
- Genetic Variation in the Decay Resistance of Siberian Larch (Larix sibirica Ledeb.) Wood
- Chromated Copper Arsenate Preservative Treatment of North American Hardwoods. Part 2. CCA Leaching Performance
- Interaction of Copper-Containing Preservatives with Wood. Part 1. Mechanism of the Interaction of Copper with Cellulose
- Identification of Cupric and Cuprous Copper in Copper Naphthenate-Treated Wood by X-Ray Photoelectron Spectroscopy
- Measurement of Wood Wettability by the Wilhelmy Method. Part 1. Contamination of Probe Liquids by Extractives
- Measurement of Wood Wettability by the Wilhelmy Method. Part 2. Determination of Apparent Contact Angles
- Biomechanical Pulping of Agave sisalana
- Oxidation of Benzyl Alcohols by the Laccase-Mediator System (LMS) a Comprehensive Kinetic Description
- Chemical Modification of Wood by Polyglycerol/Maleic Anhydride Treatment
- Relationship between Released Strain and Growth Rate in 39 Year-Old Tectona grandis Planted in Indonesia
- Reduction of Residual Stresses in Medium Density Fibreboard. Part 1. Taguchi Analysis
- Reduction of Residual Stresses in Medium Density Fibreboard. Part 2. Effects on Thickness Swell and Other Properties
- Evaluation of Pettys Nonlinear Model in Wood Permeability Measurement
- Dielectric Relaxation Based on Adsorbed Water in Wood Cell Wall under Non-Equilibrium State 2
- Preparation and Properties of Acetylated and Propionylated Wood-Silicate Composite
- The Flakes Alignment Efficiency and Orthotropic Properties of Oriented Strand Board
- Walter Liese 75 Years Young
- Literature Reports
