Preparation of Wood with Thermoplastic Properties, Part 1. Classical Synthesis
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Maria Cristina Timar
Summary
Aspen wood (Populus tremula) as sawdust was chemically modified through a two-step procedure: esterification with maleic anhydride and subsequent oligoesterification with glycidyl methacrylate and maleic anhydride. Chemical analyses and infra-red spectroscopy revealed the differences in the chemical composition and structure of wood as a result of this treatment. These changes were also reflected by a hygroscopicity test and thermal analyses such as thermogravimetry and thermomechanical analysis. The esterified wood showed an increased hygroscopicity and a decreased thermal stability compared to unmodified wood. In contrast, the oligoesterified wood demonstrated a reduced hygroscopicity and a comparable thermal stability up to about 200°C. The thermomechanical analysis of oligoesterified wood clearly showed a significant softening phenomenon in the range 80–140°C, a direct evidence of the thermoplastic properties gained by this chemical modification.
Copyright © 2000 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Identification of Indoor Rot Fungi by Taxon-Specific Priming Polymerase Chain Reaction
- Characteristics of Spruce [Picea abies (L.) Karst] Latewood Formed under Abnormally Low Temperatures
- The Chemical Nature of Kiln Brown Stain in Radiata Pine
- Microdistribution of Some Copper and Zinc Containing Waterborne and Organic Solvent Wood Preservatives in Spruce Wood Cell Walls
- X-Ray Diffraction as an Analytical Method in Wood Preservatives
- Modifications of Hybrid Walnut (Juglans nigra 23 x Juglans regia) Wood Colour and Phenolic Composition Under Various Steaming Conditions
- Incorporation of 13C-Labeled Coniferyl Alcohol into Developing Ginkgo biloba L. Lignin Revealed by Analytical Pyrolysis and CuO Oxidation in Combination with Isotope Ratio Monitoring-Gas Chromatography-Mass Spectrometry
- Atomic Force Microscopy (AFM) Investigation of Langmuir-Blodgett (LB) Films of Sugar Cane Bagasse Lignin
- Comparison of Acetic Acid Lignin with Milled Wood and Alkaline Lignins from Wheat Straw
- Monitoring of Lignin and Hemicelluloses in Spent Cooking Liquor during Kraft Delignification
- Preparation of Wood with Thermoplastic Properties, Part 1. Classical Synthesis
- Preparation of Wood with Thermoplastic Properties, Part 2. Simplified Technologies
- The Effect of Hydrostatic Pressure on Physical Properties and Microstructure of Spruce and Cherry
- Application of Liquefied Wood to a New Resin System—Synthesis and Properties of Liquefied Wood/Epoxy Resins
- Lab-Scale Synthesis of Isotopically Labeled Formaldehyde for the Production of Formaldehyde-Based Wood Adhesives
- Confirmation of the Presence of Formaldehyde and N-(Methylene)morpholinium Cations as Reactive Species in the Cellulose/NMMO/Water System by Trapping Reactions
- Compressive Creep of Wood under High Temperature Steam
- Literature Reports
Articles in the same Issue
- Identification of Indoor Rot Fungi by Taxon-Specific Priming Polymerase Chain Reaction
- Characteristics of Spruce [Picea abies (L.) Karst] Latewood Formed under Abnormally Low Temperatures
- The Chemical Nature of Kiln Brown Stain in Radiata Pine
- Microdistribution of Some Copper and Zinc Containing Waterborne and Organic Solvent Wood Preservatives in Spruce Wood Cell Walls
- X-Ray Diffraction as an Analytical Method in Wood Preservatives
- Modifications of Hybrid Walnut (Juglans nigra 23 x Juglans regia) Wood Colour and Phenolic Composition Under Various Steaming Conditions
- Incorporation of 13C-Labeled Coniferyl Alcohol into Developing Ginkgo biloba L. Lignin Revealed by Analytical Pyrolysis and CuO Oxidation in Combination with Isotope Ratio Monitoring-Gas Chromatography-Mass Spectrometry
- Atomic Force Microscopy (AFM) Investigation of Langmuir-Blodgett (LB) Films of Sugar Cane Bagasse Lignin
- Comparison of Acetic Acid Lignin with Milled Wood and Alkaline Lignins from Wheat Straw
- Monitoring of Lignin and Hemicelluloses in Spent Cooking Liquor during Kraft Delignification
- Preparation of Wood with Thermoplastic Properties, Part 1. Classical Synthesis
- Preparation of Wood with Thermoplastic Properties, Part 2. Simplified Technologies
- The Effect of Hydrostatic Pressure on Physical Properties and Microstructure of Spruce and Cherry
- Application of Liquefied Wood to a New Resin System—Synthesis and Properties of Liquefied Wood/Epoxy Resins
- Lab-Scale Synthesis of Isotopically Labeled Formaldehyde for the Production of Formaldehyde-Based Wood Adhesives
- Confirmation of the Presence of Formaldehyde and N-(Methylene)morpholinium Cations as Reactive Species in the Cellulose/NMMO/Water System by Trapping Reactions
- Compressive Creep of Wood under High Temperature Steam
- Literature Reports
