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Effect of polymer-polymer interactions on the flow behavior of some polysaccharide-based hydrogel blends
ID Kopač, Tilen (Author), ID Ručigaj, Aleš (Author), ID Krajnc, Matjaž (Author)

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Abstract
This study is the continuation of our previous work (Kopač, Abrami, et al., 2021) where the theoretical approach of polymer-polymer interaction to predict the crosslink density of hydrogels was introduced. This theory is further extended to the flow properties of hydrogels that allow the analysis of synergistic effect in hydrogel systems and the understanding of possible anomalous behavior of certain mixtures. Various hydrogel structures were prepared accordingly by blending scleroglucan, anionic nanocellulose, Laponite dispersions and alginate solution. The relationship between mechanical and flow properties of the hydrogel network was carefully studied and eventually described by mathematical model. The linear model equation to predict yield stress of hydrogels in relation to the crosslink density was designed showing a satisfactory agreement between experimental data and model predictions. The correlation was adjusted by defining a proportionality coefficient, representing the energy defined per moles of crosslinks that can be used to restore the deformation.

Language:English
Keywords:zero-shear viscosity, yield stress, shear thinning, hydrogel interactions, blending effects, mathematical modeling
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Publication status:Published
Publication version:Version of Record
Year:2022
Number of pages:12 str.
Numbering:Vol. 287, art. 119352
PID:20.500.12556/RUL-135549 This link opens in a new window
UDC:678:532.13
ISSN on article:0144-8617
DOI:10.1016/j.carbpol.2022.119352 This link opens in a new window
COBISS.SI-ID:101446659 This link opens in a new window
Publication date in RUL:18.03.2022
Views:1131
Downloads:139
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Record is a part of a journal

Title:Carbohydrate polymers
Shortened title:Carbohydr. polym.
Publisher:Elsevier
ISSN:0144-8617
COBISS.SI-ID:27286272 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:viskoznost prvega newtonskega območja, mejna napetost, strižno odvisno upadanje viskoznosti, hidrogelne interakcije, vpliv mešanja, matematično modeliranje, polimeri

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0191
Name:Kemijsko inženirstvo

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