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2005 | 108 | 1 | 151-154
Article title

EPR Studies of Carbonized Cellulose - Oxygen Interactions

Content
Title variants
Languages of publication
EN
Abstracts
EN
EPR examination of cellulose carbonized at 400ºC and 600ºC has been performed. The aim of this work was to search a sample useful as the oximetric probe in biology and medicine. The higher paramagnetic centers concentration characterizes cellulose carbonized at 600ºC, which was found as the sensitive oximetric probe. Quasi-chemical bonds between cellulose molecules and paramagnetic O_2 molecules decrease paramagnetic centers concentration. A linear increase in paramagnetic centers concentration and a linear decrease in EPR linewidth with increasing time of sample evacuation were observed for cellulose carbonized at 600ºC. Oxygen affects spin-lattice interactions in carbonized cellulose.
Keywords
EN
Year
Volume
108
Issue
1
Pages
151-154
Physical description
Dates
published
2005-07
received
2005-04-24
References
  • 1. B. Pilawa, A.B. Wieckowski, Fuel, 76, 1173, 1997
  • 2. B. Pilawa, Evolution of Paramagnetic Centers during Thermal Decomposition of Macerals, WSP, Zielona Góra 2000 (in Polish)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv108n118kz
Identifiers
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