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Thermally initiated solvent-free radical modification of beech (Fagus sylvatica) wood |
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| Authors: | Mariusz ? Mamiński Magdalena Król Armando G McDonald David N McIlroy Ishwar B Niraula Joanna Czechowska Pawe? Parzuchowski |
| Institution: | 1. Faculty of Wood Technology, Warsaw University of Life Sciences—SGGW, 159 Nowoursynowska St., 02-787, Warsaw, Poland 2. Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID, 83844-1132, USA 3. Department of Physics, University of Idaho, Moscow, ID, 83844-0903, USA 4. Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego St., 00-664, Warsaw, Poland |
| Abstract: | A procedure for rapidly modifying beech wood using a thermally initiated solvent-free grafting system was examined. In the modification, butyl acrylate and butyl methacrylate were used as vinyl monomers. Free radicals were generated from 2,2′-azobis(2-methylpropionitrile) or benzoyl peroxide at 103 and 180 °C by contact heating of the modified material. Chemical changes in the material were investigated by FTIR and X-ray photoelectron spectroscopies. The modification resulted in decreased surface wetting of the material manifested by increased water contact angles. The hardness of the resultant material decreased, while its color changed by the effect of temperature. It was shown that the approach allowed for efficient thermal-initiated modification of wood with rapid contact heating. |
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