Photooxidation of Chemically Modified Celluloses and Free-Radical Formation
| Autor: | S.M. Moonim, Jett C. Arthur, E.H. Daruwalla |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
010302 applied physics
Polymers and Plastics organic chemicals Radical 02 engineering and technology 021001 nanoscience & nanotechnology Resonance (chemistry) 01 natural sciences chemistry.chemical_compound chemistry 0103 physical sciences Functional group Polymer chemistry Polar effect Chemical Engineering (miscellaneous) Organic chemistry Singlet state Cellulose 0210 nano-technology Free Radical Formation |
| Zdroj: | Textile Research Journal. 42:592-595 |
| ISSN: | 1746-7748 0040-5175 |
| DOI: | 10.1177/004051757204201008 |
| Popis: | Free-radical and functional-group formations in cotton cellulose and in acetylated, benzhydrylated, benzoylated, benzylated, and cyanoethylated cotton celluloses on irradiation with near-uv light were determined. Modified cotton celluloses with electron withdrawing groups, such as acetyl and benzoyl groups, were more resistant to photooxidation than modified celluloses with structures, such as benzhydryl, benzyl, and cyanoethyl groups. The electron-spin resonance spectra of the photo-irradiated celluloses, in all cases, were singlet spectra; however, the steady-state concentrations of the free radicals in the irradiated celluloses were related to the nature of the pendant groups. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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