Details
| Original language | English |
|---|---|
| Pages (from-to) | 267-271 |
| Number of pages | 5 |
| Journal | HOLZFORSCHUNG |
| Volume | 61 |
| Issue number | 3 |
| Publication status | Published - 1 May 2007 |
| Externally published | Yes |
Abstract
Gamma irradiation, which is an easy, fast and effective method for wood sterilisation, changes molecular structures not only in pest cells, but also in wood cell walls. Radiation-induced depolymerisation causes significant changes in some properties of wood crucial for restoration and for laboratory testing of wood-preservative effectiveness, as demonstrated by experimental data. The influence of gamma radiation on maximum swelling (αMAX), resistance to impact milling (RIM), and the total amount of water-soluble carbohydrates (TSC) was investigated. Cobalt (60Co) was used as a gamma source and Scots pine wood (Pinus sylvestris L.) was irradiated at doses of 30, 90 and 150 kGy. A strong linear correlation was found between TSC and radiation dosage. Leached irradiated specimens showed significantly greater TSC content than non-irradiated controls. RIM decreased significantly and linearly with increasing radiation dosage. After leaching, the linearity between these parameters improved. Gamma radiation had no significant effect on αMAX and the time elapsed after irradiation did not influence αMAX, RIM or TSC.
Keywords
- High-energy multiple impact (HEMI) test, Maximum swelling, Resistance to impact milling (RIM), Total water-soluble carbohydrates (TSC), Wood sterilisation
ASJC Scopus subject areas
- Materials Science(all)
- Biomaterials
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In: HOLZFORSCHUNG, Vol. 61, No. 3, 01.05.2007, p. 267-271.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Changes in physical, mechanical and chemical properties of wood during sterilisation by gamma radiation
AU - Despot, Radovan
AU - Hasan, Marin
AU - Brischke, Christian
AU - Welzbacher, Christian Robert
AU - Rapp, Andreas Otto
PY - 2007/5/1
Y1 - 2007/5/1
N2 - Gamma irradiation, which is an easy, fast and effective method for wood sterilisation, changes molecular structures not only in pest cells, but also in wood cell walls. Radiation-induced depolymerisation causes significant changes in some properties of wood crucial for restoration and for laboratory testing of wood-preservative effectiveness, as demonstrated by experimental data. The influence of gamma radiation on maximum swelling (αMAX), resistance to impact milling (RIM), and the total amount of water-soluble carbohydrates (TSC) was investigated. Cobalt (60Co) was used as a gamma source and Scots pine wood (Pinus sylvestris L.) was irradiated at doses of 30, 90 and 150 kGy. A strong linear correlation was found between TSC and radiation dosage. Leached irradiated specimens showed significantly greater TSC content than non-irradiated controls. RIM decreased significantly and linearly with increasing radiation dosage. After leaching, the linearity between these parameters improved. Gamma radiation had no significant effect on αMAX and the time elapsed after irradiation did not influence αMAX, RIM or TSC.
AB - Gamma irradiation, which is an easy, fast and effective method for wood sterilisation, changes molecular structures not only in pest cells, but also in wood cell walls. Radiation-induced depolymerisation causes significant changes in some properties of wood crucial for restoration and for laboratory testing of wood-preservative effectiveness, as demonstrated by experimental data. The influence of gamma radiation on maximum swelling (αMAX), resistance to impact milling (RIM), and the total amount of water-soluble carbohydrates (TSC) was investigated. Cobalt (60Co) was used as a gamma source and Scots pine wood (Pinus sylvestris L.) was irradiated at doses of 30, 90 and 150 kGy. A strong linear correlation was found between TSC and radiation dosage. Leached irradiated specimens showed significantly greater TSC content than non-irradiated controls. RIM decreased significantly and linearly with increasing radiation dosage. After leaching, the linearity between these parameters improved. Gamma radiation had no significant effect on αMAX and the time elapsed after irradiation did not influence αMAX, RIM or TSC.
KW - High-energy multiple impact (HEMI) test
KW - Maximum swelling
KW - Resistance to impact milling (RIM)
KW - Total water-soluble carbohydrates (TSC)
KW - Wood sterilisation
UR - http://www.scopus.com/inward/record.url?scp=34247562712&partnerID=8YFLogxK
U2 - 10.1515/HF.2007.064
DO - 10.1515/HF.2007.064
M3 - Article
AN - SCOPUS:34247562712
VL - 61
SP - 267
EP - 271
JO - HOLZFORSCHUNG
JF - HOLZFORSCHUNG
SN - 0018-3830
IS - 3
ER -