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VENEROVÁ, T. PEKAŘ, M.
Original Title
Rheological properties of gels formed by physical interactions between hyaluronan and cationic surfactants
Type
journal article in Web of Science
Language
English
Original Abstract
The aim of this paper is the rheological characterization of the concentrated, gel-like phase, which arises from mixed solutions of sodium hyaluronate and oppositely charged surfactant above its critical micellar concentration. The effects of hyaluronan molecular weight (from 300 to 2 kDa) and the concentration of initial solutions (0.5 and 2% for hyaluronan, 50 or 200 mM for surfactant) were investigated. All systems demonstrated viscoelastic properties which can be modified over a broad range of several decades of both storage and loss moduli by the hyaluronan molecular weight and initial concentrations. The characteristic relaxation time increased with the molecular weight of hyaluronan at constant initial composition. The effect of molecular weight on characteristic moduli was dependent on initial composition – the modulus increased with molecular weight for systems with 50 mM of the surfactant and decreased for the other systems. Whereas no correlation was found between gel rheological properties and the surfactant:hyaluronan charge ratio, the properties were sensitive to structural features of surfactant molecules, particularly when low and moderate hyaluronan molecular weight was used.
Keywords
Hyaluronan, cationic surfactants, rheology, gels
Authors
VENEROVÁ, T.; PEKAŘ, M.
Released
24. 4. 2017
ISBN
0144-8617
Periodical
Carbohydrate Polymers
Year of study
170
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
176
Pages to
181
Pages count
6
URL
http://www.sciencedirect.com/science/article/pii/S0144861717304836
BibTex
@article{BUT135370, author="Tereza {Venerová} and Miloslav {Pekař}", title="Rheological properties of gels formed by physical interactions between hyaluronan and cationic surfactants", journal="Carbohydrate Polymers", year="2017", volume="170", number="1", pages="176--181", doi="10.1016/j.carbpol.2017.04.087", issn="0144-8617", url="http://www.sciencedirect.com/science/article/pii/S0144861717304836" }