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TEMPO-Mediated Oxidation of Native Cellulose. The Effect of Oxidation Conditions on Chemical and Crystal Structures of the Water-Insoluble Fractions
Abstract
Cellulose cotton linter was oxidized with sodium hypochlorite with catalytic amounts of sodium bromide and 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) under various conditions. After this TEMPO-mediated oxidation, water-insoluble fractions were collected and characterized in terms of carboxylate and aldehyde contents, crystallinities and crystal sizes, degrees of polymerization, morphology, and water retention values. Carboxylate and aldehyde groups were introduced into the water-insoluble fractions up to about 0.7 and 0.3 mmol/g, respectively, by the oxidation, where recovery of the water-insoluble fractions were generally higher than 80%. Crystallinities and crystal sizes of cellulose I were nearly unchanged during the oxidation, and thus, carboxylate and aldehyde groups were introduced selectively on crystal surfaces and in disordered regions of the water-insoluble fractions. Water retention values of cotton linter can be increased from 60% to about 280% through the introduction of hydrophilic carboxylate groups and morphological changes from fibrous forms to short fragments by the TEMPO-mediated oxidation.
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Cited by
Cellulose nanofibers prepared by TEMPO-mediated oxidation of native cellulose
Saito, T., Kimura, S., Nishiyama, Y., & Isogai, A. (2007) · Biomacromolecules · doi:10.1021/bm0703970 · Cited by 2,493
Self-citationSaito, T., Nishiyama, Y., Putaux, J.-L., Vignon, M., & Isogai, A. (2006) · Biomacromolecules · doi:10.1021/bm060154s · Cited by 1,796
Self-citationTransparent and high gas barrier films of cellulose nanofibers prepared by TEMPO-mediated oxidation
Fukuzumi, H., Saito, T., Iwata, T., Kumamoto, Y., & Isogai, A. (2009) · Biomacromolecules · doi:10.1021/bm801065u · Cited by 1,271
Self-citationCurrent characterization methods for cellulose nanomaterials
Foster, E. J., Moon, R. J., Agarwal, U. P., Bortner, M. J., Bras, J., Camarero-Espinosa, S., Chan, K. J., Clift, M. J. D., Cranston, E. D., Eichhorn, S. J., et al. (2018) · Chemical Society Reviews · doi:10.1039/c6cs00895j · Cited by 1,021
Conversion of Lignocellulosic Biomass to Nanocellulose: Structure and Chemical Process
Lee, H. V., Hamid, S. B. A., & Zain, S. K. (2014) · The Scientific World Journal · doi:10.1155/2014/631013 · Cited by 700
Metadata
- Authors
- Saito, T., & Isogai, A.
- Venue
- Biomacromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-07-09
- Volume
- 5
- Issue
- 5
- Pages
- 1983-1989
- ISSN
- 1525-7797 (ISSN-L)
- 1526-4602
- OpenAlex
- W2040590312
- Cited by
- 1,292
- References
- 0
- FWCI
- 3.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- Saito, T., & Isogai, A. (2004). TEMPO-Mediated Oxidation of Native Cellulose. The Effect of Oxidation Conditions on Chemical and Crystal Structures of the Water-Insoluble Fractions. Biomacromolecules. https://doi.org/10.1021/bm0497769
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