Polysaccharide-based hydrogels crosslink density equation : a rheological and LF-NMR study of polymer-polymer interactions

Kopač, Tilen (avtor), Abrami, Michela (avtor), Grassi, Mario (avtor), Ručigaj, Aleš (avtor), Krajnc, Matjaž (avtor)

A simple relation between pendant groups of polymers in hydrogels is introduced to determine the crosslink density of (complex) hydrogel systems (mixtures of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) modified nanocellulose, alginate, scleroglucan and Laponite in addition of crosslinking agents). Furthermore, the rheological properties and their great potential connection to design complex hydrogel systems with desired properties have been thoroughly investigated. Hydrogel structures governing internal friction and flow resistance were described by the predominant effect of ionic, hydrogen, and electrostatic interactions. The relationship between rheological properties and polymer-polymer interactions in the hydrogel network is explained and expressed in a new mathematical model for determining the crosslink density of (crosslinked) hydrogels based on single or mixture of polymer systems. In the end, the combined used of rheology and low field nuclear magnetic resonance spectroscopy (LF-NMR) for the characterization of hydrogel networks is developed.

• Jezik: Angleški jezik
• Ključne besede: crosslink density, rheology, LF-NMR, hydrogel interactions, mathematical modeling
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 15 str.
• Številčenje: Vol. 277, art. 118895
• PID: 20.500.12556/RUL-133265
• UDK: 678:532.135
• ISSN pri članku: 0144-8617
• DOI: 10.1016/j.carbpol.2021.118895
• COBISS.SI-ID: 85328899
• Datum objave v RUL: 19.11.2021

Gradivo je del revije

• Naslov: Carbohydrate polymers
• Skrajšan naslov: Carbohydr. polym.
• Založnik: Elsevier
• ISSN: 0144-8617
• COBISS.SI-ID: 27286272

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: gostota zamreženja, reologija, LF-NMR, hidrogelne interakcije, matematično modeliranje

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0191
• Naslov: Kemijsko inženirstvo