Effects of pH, ionic strength, and type of anion on the rheological properties of chitosan solutions
Abstract
Changes in the rheological properties of chitosan solutions with pH, ionic strength, and type of anion were studied. Between pH 2.0 and 5.0, apparent viscosities increased with the decrease of pH in chitosan–organic acid solutions, while in chitosan–HCl solutions they behaved oppositely. In chitosan–NaOH solutions, they decreased with the increase of pH between pH 5.0 and 6.0, then increased as pH further increased to pH 6.0–6.4. The difference may be due to different interactions of counterions with macroions and also the third electroviscous effect. Relative viscosity increased with a decrease in chitosan concentrations at concentrations below 1.5 × 10−3 M. Intrinsic viscosities changed with media pH and ionic strength.
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α-Chitosan's low solubility limits its direct use as an injectable or hydrogel-based barrier, but crosslinked α-chitosan films can provide durable physical barriers that prevent tissue adhesion.
“While its low solubility limits its direct use as an injectable or hydrogel-based barrier, crosslinked α-chitosan films can provide durable physical barriers that prevent tissue adhesion [156].”
From Biomaterials in Postoperative Adhesion Barriers and Uterine Tissue Engineering (2025) · cites this paper as [156]
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Biomaterials in Postoperative Adhesion Barriers and Uterine Tissue Engineering
Fazel Anvari-Yazdi, A., Badea, I., & Chen, X. (2025) · Gels · doi:10.3390/gels11060441 · Cited by 20 · see citing works
- Authors
- Chen, R. H., Lin, W. C., & Lin, J. H.
- Affiliations
- National Taiwan Ocean University (TW)
- Corresponding author
- Chen, R. H.
- Venue
- Acta Polymerica
- Publisher
- Wiley
- Published
- 1994-02
- Volume
- 45
- Issue
- 1
- Pages
- 41-46
- ISSN
- 0323-7648 (ISSN-L)
- 1521-4044
- OpenAlex
- W2137446651
- Cited by
- 50
- References
- 0
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 2 · 2023: 5 · 2022: 1 · 2021: 2 · 2020: 1 · 2019: 3 · 2018: 4 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 1
- FWCI
- 0.56
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Acta Polymerica (publishedVersion)
- Funders
- National Science Council
- Topics
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Electrostatics and Colloid Interactions
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Rheology and Fluid Dynamics Studies
- Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
- Keywords
- chitosan solutions, rheological properties, pH dependence, ionic strength, anion type, apparent viscosity, intrinsic viscosity, counterion interactions, electroviscous effect
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