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Open AccessArticle

Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels

Faculty of Chemistry, Brno University of Technology, Purkynova 464/118, 612 00 Brno, Czech Republic
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Polymers 2019, 11(5), 927; https://doi.org/10.3390/polym11050927
Received: 25 April 2019 / Revised: 23 May 2019 / Accepted: 24 May 2019 / Published: 27 May 2019
(This article belongs to the Special Issue Polymer Biointerfaces)
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. View Full-Text
Keywords: Hyaluronan; carbethopendecinium bromide; sodium dodecyl sulphate; diethylaminoethyl-dextran hydrochloride; rheology; hydrogels Hyaluronan; carbethopendecinium bromide; sodium dodecyl sulphate; diethylaminoethyl-dextran hydrochloride; rheology; hydrogels
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MDPI and ACS Style

Smilek, J.; Jarábková, S.; Velcer, T.; Pekař, M. Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels. Polymers 2019, 11, 927.

AMA Style

Smilek J, Jarábková S, Velcer T, Pekař M. Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels. Polymers. 2019; 11(5):927.

Chicago/Turabian Style

Smilek, Jiří; Jarábková, Sabína; Velcer, Tomáš; Pekař, Miloslav. 2019. "Compositional and Temperature Effects on the Rheological Properties of Polyelectrolyte–Surfactant Hydrogels" Polymers 11, no. 5: 927.

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