Polysaccharide-based hydrogels crosslink density equation

ǂa ǂrheological and LF-NMR study of polymer-polymer interactions

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

Abstract

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.

Keywords

gostota zamreženja;reologija;LF-NMR;hidrogelne interakcije;matematično modeliranje;crosslink density;rheology;hydrogel interactions;mathematical modeling;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
UDC:	678:532.135
COBISS:	85328899
ISSN:	0144-8617
Views:	249
Downloads:	121
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	gostota zamreženja;reologija;LF-NMR;hidrogelne interakcije;matematično modeliranje;
Type (COBISS):	Article
Pages:	str. 1-15
Issue:	ǂVol. ǂ277
Chronology:	1 Feb. 2022
DOI:	10.1016/j.carbpol.2021.118895
ID:	13981585