Detail publikačního výsledku
Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels
SMILEK, J.; JARÁBKOVÁ, S.; VELCER, T.; PEKAŘ, M.
Original Title
Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels
English Title
Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels
Type
WoS Article
Original Abstract
The rheological properties of hydrogels prepared by physical interactions between oppositely charged polyelectrolyte and surfactant in micellar form were studied. Specifically, hyaluronan was employed as a negatively charged polyelectrolyte and Septonex (carbethopendecinium bromide) as a cationic surfactant. Amino-modified dextran was used as a positively charged polyelectrolyte interacting with sodium dodecylsulphate as an anionic surfactant. The effects of the preparation method, surfactant concentration, ionic strength (the concentration of NaCl background electrolyte), pH (buffers), multivalent cations, and elevated temperature on the properties were investigated. The formation of gels required an optimum ionic strength (set by the NaCl solution), ranging from 0.15–0.3 M regardless of the type of hydrogel system and surfactant concentration. The other compositional effects and the effect of temperature were dependent on the polyelectrolyte type or its molecular weight. General differences between the behaviour of hyaluronan-based and cationized dextran-based materials were attributed to differences in the chain conformations of the two biopolymers and in the accessibility of their charged groups.
English abstract
The rheological properties of hydrogels prepared by physical interactions between oppositely charged polyelectrolyte and surfactant in micellar form were studied. Specifically, hyaluronan was employed as a negatively charged polyelectrolyte and Septonex (carbethopendecinium bromide) as a cationic surfactant. Amino-modified dextran was used as a positively charged polyelectrolyte interacting with sodium dodecylsulphate as an anionic surfactant. The effects of the preparation method, surfactant concentration, ionic strength (the concentration of NaCl background electrolyte), pH (buffers), multivalent cations, and elevated temperature on the properties were investigated. The formation of gels required an optimum ionic strength (set by the NaCl solution), ranging from 0.15–0.3 M regardless of the type of hydrogel system and surfactant concentration. The other compositional effects and the effect of temperature were dependent on the polyelectrolyte type or its molecular weight. General differences between the behaviour of hyaluronan-based and cationized dextran-based materials were attributed to differences in the chain conformations of the two biopolymers and in the accessibility of their charged groups.
Keywords
Hyaluronan; carbethopendecinium bromide; sodium dodecyl sulphate; diethylaminoethyl-dextran hydrochloride; rheology; hydrogels
Key words in English
Hyaluronan; carbethopendecinium bromide; sodium dodecyl sulphate; diethylaminoethyl-dextran hydrochloride; rheology; hydrogels
Authors
SMILEK, J.; JARÁBKOVÁ, S.; VELCER, T.; PEKAŘ, M.
RIV year
2020
Released
27.05.2019
Publisher
MDPI
Location
Basel, Switzerland
ISBN
2073-4360
Periodical
Polymers
Volume
11
Number
5
State
Swiss Confederation
Pages from
927
Pages to
946
Pages count
19
URL
Full text in the Digital Library
BibTex
@article{BUT157143,
author="Jiří {Smilek} and Sabína {Jarábková} and Tomáš {Velcer} and Miloslav {Pekař}",
title="Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels",
journal="Polymers",
year="2019",
volume="11",
number="5",
pages="927--946",
doi="10.3390/polym11050927",
issn="2073-4360",
url="https://www.mdpi.com/2073-4360/11/5/927"
}Documents