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Effect of high-energy radiation and alkali treatment on the properties of cellulose
Radiation Physics and Chemistry, 67 (3-4): 505-508 (2003)
Аннотация
The effect of the treatment with NaOH or tetramethyl ammonium hydroxide
solutions on preirradiated cotton-cellulose was investigated. Both
the radiation and the treatment with alkali solutions caused loss
of weight in cellulose; however, there was a synergism, a high weight
loss was observed during alkali treatment of preirradiated samples.
The radiation caused scissions of the cellulose chains and during
the treatment with aqueous alkaline solutions some smaller fragments
dissolved, resulting in a strong absorbance of the solutions with
maximum at around 268 nm. It was attributed to the absorbance of
aldehyde/keto groups. (C) 2003 Elsevier Science Ltd. All rights reserved.
тэги
- cellulose
- cotton-cellulose;
- degradation;
- gamma-irradiation
- hydroxide;
- loss
- mass;
- of
- powder;
- radiation
- spectroscopy
- tetramethylammonium
- uv
