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Relation between the Degree of Acetylation and the Electrostatic Properties of Chitin and Chitosan
Abstract
A series of chitosan/chitin samples with DA's varying between 5.2 and 89% was prepared from the reacetylation under soft conditions of a unique chitosan sample allowing the preservation of the chain distribution. The study of the variation of pH for the same concentration of amine groups, at different ionic strengths, on the scale of DA's allows us to extrapolate the variation of pKa at dissociation degrees (alpha) 0 and 1. A modeling of all the curves was obtained by means of only one equation. Then, for given concentration of chitosan and ionic strength, it is possible to predict the pH of the solution whatever the DA and alpha. The role of DA through the participation of hydrophobic interactions and hydrogen bondings on the electrostatic parameters is discussed. The results allow a better understanding of some physicochemical and biological properties of chitosan and chitin.
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Cited by
Vakili, M., Rafatullah, M., Salamatinia, B., Abdullah, A. Z., Ibrahim, M. H., Tan, K. B., Gholami, Z., & Amouzgar, P. (2014) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2014.07.007 · Cited by 1,099
Graphene/AuNPs/chitosan nanocomposites film for glucose biosensing
Shan, C., Yang, H., Han, D., Zhang, Q., Ivaska, A., & Niu, L. (2010) · Biosensors and Bioelectronics · doi:10.1016/j.bios.2009.09.024 · Cited by 788
Heterogeneous catalysis on chitosan-based materials: A review
Guibal, E. (2005) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2004.12.001 · Cited by 722
Protonation constants of chitosan with different molecular weight and degree of deacetylation
Wang, Q. Z., Chen, X. G., Liu, N., Wang, S. X., Liu, C. S., Meng, X. H., & Liu, C. G. (2006) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2006.01.001 · Cited by 486
Liu, L., Li, C., Bao, C., Jia, Q., Xiao, P., Liu, X., & Zhang, Q. (2012) · Talanta · doi:10.1016/j.talanta.2012.02.051 · Cited by 408
Metadata
- Authors
- Sorlier, P., Denuzière, A., Viton, C., & Domard, A.
- Venue
- Biomacromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-07-10
- Volume
- 2
- Issue
- 3
- Pages
- 765-772
- ISSN
- 1525-7797 (ISSN-L)
- 1526-4602
- OpenAlex
- W2079822872
- Cited by
- 688
- References
- 0
- FWCI
- 10.67
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sorlier, P., Denuzière, A., Viton, C., & Domard, A. (2001). Relation between the Degree of Acetylation and the Electrostatic Properties of Chitin and Chitosan. Biomacromolecules. https://doi.org/10.1021/bm015531%2B
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