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TEMPO-mediated Oxidation of Native Cellulose: SEC–MALLS Analysis of Water-soluble and -Insoluble Fractions in the Oxidized Products
| Content Provider | Semantic Scholar |
|---|---|
| Author | Saito, Tsuguyuki Yanagisawa, Masahiro Isogai, Akira |
| Copyright Year | 2005 |
| Abstract | Linter cellulose was suspended in water and oxidized by the NaClO/NaBr/2,2,6,6-tetramehylpiperidine-1-oxy radical (TEMPO) system at pH 10.5 (TEMPO-mediated oxidation), and the oxidized products were separated into several fractions by filtration and centrifugation, depending on their particle sizes and apparent water-solubility. The major fraction (>ca. 80 mass % of the original linter cellulose) is the filter paper-trapped fibers, which can form inter-fiber hemiacetal linkages when handsheets are prepared thereof. Size-exclusion chromatographic analysis with multi-angle laser light scattering detection (SEC–MALLS) of these fibrous fractions dissolved in 0.5% LiCl/N,N-dimethylacetamide (DMAc) showed that some depolymerization occurred on cellulose chains during the TEMPO-mediated oxidation. On the other hand, the apparently water-soluble fractions ( |
| Starting Page | 305 |
| Ending Page | 315 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10570-004-5835-8 |
| Volume Number | 12 |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/s10570-004-5835-8 |
| Alternate Webpage(s) | https://doi.org/10.1007/s10570-004-5835-8 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
