Effect of polymer-polymer interactions on the flow behavior of some polysaccharide-based hydrogel blends

Kopač, Tilen (author), Ručigaj, Aleš (author), Krajnc, Matjaž (author)

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
• UDC: 678:532.13
• ISSN on article: 0144-8617
• DOI: 10.1016/j.carbpol.2022.119352
• COBISS.SI-ID: 101446659
• Publication date in RUL: 18.03.2022

Record is a part of a journal

• Title: Carbohydrate polymers
• Shortened title: Carbohydr. polym.
• Publisher: Elsevier
• ISSN: 0144-8617
• COBISS.SI-ID: 27286272

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