Dimensional stabilisation of wood
| Autor: | E. J. Gibson, G. A. Smith, R. A. Laidlaw |
|---|---|
| Rok vydání: | 1966 |
| Předmět: |
chemistry.chemical_classification
Materials science technology industry and agriculture Polymer Methacrylate Toxicology complex mixtures Solvent chemistry.chemical_compound Monomer Polymerization chemistry Chemical engineering Polymer chemistry medicine Lignin Methyl methacrylate Swelling medicine.symptom |
| Zdroj: | Journal of Biochemical Toxicology. 16:58-64 |
| ISSN: | 1522-7146 0887-2082 |
| DOI: | 10.1002/jbt.2570160206 |
| Popis: | The dimensional stabilisation of timber by impregnation with methyl methacrylate and polymerisation by γ-radiation has been studied. Treatment with pure monomer yielded a product wherein the voids in the wood were filled with homopolymer, but introduction of the monomer in a solvent which swells wood enabled the methacrylate to penetrate the cell walls, giving a product which was not entirely extractable with polymer solvents such as chloroform. Both methods gave products with improved strength and stability, but it was shown that, at low polymer loadings, use of a swelling solvent for impregnation caused some breakdown of the more ordered regions of the cell wall, and could lead to swelling greater than that of the untreated wood. There is some evidence to suggest that, if graft copolymerisation is achieved at all under these conditions, it may be to the lignin rather than to the carbohydrate portions of the wood. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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