ISSN:
1432-5225
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Summary An attempt is made in this study to relate the gamma-irradiation induced degradation of wood samples to their lignin content and distribution in the cell wall. Samples of Douglas-fir and yellow-poplar were submitted to increasing doses of gamma-irradiation and subsequently extracted with a dilute NaOH solution or with DMSO, prior to SEM observation. Other samples were observed in TEM. The irradiation-extraction procedure degraded the hardwood more than the softwood. In both species, the middle lamella was more resistant than the secondary wall. The S3 layer in Douglas-fir and the warty layer in yellow-poplar appeared to be more resistant than the other secondary wall layers. Some difference was also observed in radiation stability between tracheids or fibres and ray cells. This procedure is suggested as a method for studying lignin distribution in the wood cell wall.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00367531
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