The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Rapid Dissolution of Cellulose in LiOH/Urea and NaOH/Urea Aqueous Solutions
Abstract
Summary: Rapid dissolution of cellulose in LiOH/urea and NaOH/urea aqueous solutions was studied systematically. The dissolution behavior and solubility of cellulose were evaluated by using 13 C NMR, optical microscopy, wide‐angle X‐ray diffraction (WAXD), FT‐IR spectroscopy, DSC, and viscometry. The experiment results revealed that cellulose having viscosity‐average molecular weight ($\overline M _\eta $) of 11.4 × 104 and 37.2 × 104 could be dissolved, respectively, in 7% NaOH/12% urea and 4.2% LiOH/12% urea aqueous solutions pre‐cooled to −10 °C within 2 min, whereas all of them could not be dissolved in KOH/urea aqueous solution. The dissolution power of the solvent systems was in the order of LiOH/urea > NaOH/urea ≫ KOH/urea aqueous solution. The results from DSC and 13 C NMR indicated that LiOH/urea and NaOH/urea aqueous solutions as non‐derivatizing solvents broke the intra‐ and inter‐molecular hydrogen bonding of cellulose and prevented the approach toward each other of the cellulose molecules, leading to the good dispersion of cellulose to form an actual solution. 13 C NMR chemical shifts of carbonyl carbon for urea in LiOH (a) and NaOH (b) of the cellulose solutions. magnified image13 C NMR chemical shifts of carbonyl carbon for urea in LiOH (a) and NaOH (b) of the cellulose solutions.
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Cites
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Feng, J., Nguyen, S. T., Fan, Z., & Duong, H. M. (2015) · Chemical Engineering Journal · doi:10.1016/j.cej.2015.02.034 · Cited by 462
Zeng, J., Liu, S., Cai, J., & Zhang, L. (2010) · The Journal of Physical Chemistry C · doi:10.1021/jp1005617 · Cited by 253
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Metadata
- Authors
- Cai, J., & Zhang, L.
- Venue
- Macromolecular Bioscience
- Publisher
- Wiley
- Published
- 2005-06-13
- Volume
- 5
- Issue
- 6
- Pages
- 539-548
- ISSN
- 1616-5187 (ISSN-L)
- 1616-5195
- OpenAlex
- W2034766960
- Cited by
- 1,047
- References
- 22
- FWCI
- 4.40
- Type
- journal article
- Language
- en
- Open access
- closed
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