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Holz als Roh- und Werkstoff

, Volume 63, Issue 6, pp 437–441 | Cite as

An investigation of the cell wall ultrastructure of the sapwood of ten Greek wood species by means of chemical modification

  • Antonios N. PapadopoulosEmail author
ORIGINALARBEITEN ORIGINALS

Abstract

The aim of this study was to investigate the cell wall ultrastructure of the sapwood of ten Greek wood species using chemical modification. Reactions with different sized anhydride molecules were performed on oven-dry samples in the presence of water-free xylene, which does not swell the cell wall. Reactions were also performed under identical conditions, but on wood samples that had been dried under solvent exchange conditions, thereby retaining the swollen cell wall pore structure. The results indicated that the diameters of the micropores in the cell wall of oven dried ash and elm are smaller than 0.80 nm and larger than 0.74 nm, those of beech, fir, Douglas fir, hornbeam and pine (Pinus nigra) smaller than 0.74 nm and larger than 0.66 nm, whereas those of maple, poplar, pine (Pinus sylvestris) are smaller than 0.66 nm.

Keywords

Poplar Acetic Anhydride Pinus Sylvestris Pinus Nigra Cellulose Aerogel 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Untersuchung der Zellwand-Ultrastruktur von Splintholz bei zehn griechischen Holzarten mit Hilfe chemischer Modifikation

Zusammenfassung

Ziel dieser Arbeit war es, die Zellwandultrastruktur des Splintholzes von zehn griechischen Holzarten mit Hilfe chemischer Modifizierung zu untersuchen. Versuche mit Anhydrid-Molekülen verschiedener Grösse wurden an gedarrten Proben in einer wasserfreien Xylol-Umgebung durchgeführt, die keine Quellung der Zellwand hervorruft. Weiterhin wurden Versuche mit identischen Bedingungen an Proben durchgeführt, die unter Austauschbedingungen von Lösungsmitteln getrocknet worden waren, wodurch die gequollene Porenstruktur der Zellwände erhalten blieb. Die Ergebnisse zeigten, dass die Durchmesser der Mikroporen in der Zellwand von gedarrter Esche und Ulme kleiner 0.80 nm und grösser 0.74 nm sind. Buche, Tanne, Douglasie, Hainbuche und Schwarzkiefer (Pinus nigra) weisen Poren kleiner 0.74 nm und grösser 0.66 nm auf, wohingegen die von Ahorn, Pappel und Kiefer (Pinus sylvestris) kleiner 0.66 nm sind.

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Department of Forestry and Management of Natural EnvironmentTechnological Educational Institute of DramaDramaGreece

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