| Autor: |
Jiang, Guansen, Huang, Weifeng, Wang, Baochun, Zhang, Yumei, Wang, Huaping |
| Předmět: |
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| Zdroj: |
Cellulose; Jun2012, Vol. 19 Issue 3, p679-685, 7p |
| Abstrakt: |
The morphology and crystalline structure changes of cellulose during dissolution in 1-butyl-3-methylimidazolium chloride [(BMIM)Cl] were investigated by optical microscopy and synchrotron radiation wide-angle X-ray diffraction (WAXD). Neither swelling nor dissolution of cellulose was observed under the melting point of [BMIM]Cl. While the temperature was elevated to 70 °C, the swelling phenomenon of cellulose happened with the interplanar spacing of ( $$ 1\bar{1}0 $$) and (020) planes increased slightly. With the temperature further going up to 80 °C, cellulose was dissolved gradually with the crystallinity ( W) and crystalline index ( CrI) of cellulose decreased rapidly, which indicated the crystalline structure of cellulose was destroyed completely and transformed into amorphous structure. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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