The effect of aging on the ultrastructure of wood

Autor:	Walter Liese, Karl Borgin, Narayan Parameswaran
Rok vydání:	1975
Předmět:	Polarized light microscopy Materials science Fracture (mineralogy) Forestry Plant Science Adhesion Matrix (biology) Industrial and Manufacturing Engineering law.invention law Microscopy Ultrastructure General Materials Science Composite material Electron microscope Middle lamella
Zdroj:	Wood Science and Technology. 9:87-98
ISSN:	1432-5225 0043-7719
DOI:	10.1007/bf00353388
Popis:	Wood samples varying in age from 900 to 4400 years were investigated with the electron microscopes (TEM, SEM) and polarized light microscopy as well as by analysis of the mechanism of fracture. The weakest parts of the structure, and therefore the most susceptible to failure, are the middle lamella/S1 region and the interfibrillar matrix. Parts of the wall exhibit fissures, cracks and loss of adhesion, not found in recent wood. Studies of the fractured surfaces confirm a change in the micromorphology of the old wood samples. In spite of the breakdown of certain elements at ultrastructural level the samples had retained almost their normal macroscopic appearance and properties. As long as the main reinforcing structural elements, the microfibrils, remain intact, the major properties of wood do not apparently undergo drastic changes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::765f42781f75e8ec192cee1101efdd9e https://doi.org/10.1007/bf00353388 Zobrazit plný text záznamu Full text from SpringerLink