Publication detail

How the Addition of Chitosan Affects the Transport and Rheological Properties of Agarose Hydrogels

KLUČÁKOVÁ, M.

Original Title

How the Addition of Chitosan Affects the Transport and Rheological Properties of Agarose Hydrogels

Type

journal article in Web of Science

Language

English

Original Abstract

Agarose hydrogels enriched by chitosan were studied from a point of view diffusion and the immobilization of metal ions. Copper was used as a model metal with a high affinity to chitosan. The influence of interactions between copper and chitosan on transport properties was investigated. Effective diffusion coefficients were determined and compared with values obtained from pure agarose hydrogel. Their values increased with the amount of chitosan added to agarose hydrogel and the lowest addition caused the decrease in diffusivity in comparison with hydrogel without chitosan. Liesegang patterns were observed in the hydrogels with higher contents of chitosan. The patterns were more distinct if the chitosan content increased. The formation of Liesegang patterns caused a local decrease in the concentration of copper ions and concentration profiles were affected by this phenomenon. Thus, the values of effective diffusion coefficient covered the influences of pore structure of hydrogels and the interactions between chitosan and metal ions, including precipitation on observed Liesegang rings. From the point of view of rheology, the addition of chitosan resulted in changes in storage and loss moduli, which can show on a “more liquid” character of enriched hydrogels. It can contribute to the increase in the effective diffusion coefficients for hydrogels with higher content of chitosan.

Keywords

chitosan; copper; diffusion; Liesegang pattern; solubility product; immobilization

Authors

KLUČÁKOVÁ, M.

Released

23. 1. 2023

Publisher

MDPI

ISBN

2310-2861

Periodical

Gels

Year of study

9

Number

2

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/2310-2861/9/2/99

Full text in the Digital Library

http://hdl.handle.net/11012/209242

BibTex

@article{BUT181548,
  author="Martina {Klučáková}",
  title="How the Addition of Chitosan Affects the Transport and Rheological Properties of Agarose Hydrogels",
  journal="Gels",
  year="2023",
  volume="9",
  number="2",
  pages="16",
  doi="10.3390/gels9020099",
  issn="2310-2861",
  url="https://www.mdpi.com/2310-2861/9/2/99"
}