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Fernandes, Alexandra
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Publications (7/7 displayed)
- 2023Chitin-Glucan Complex Hydrogelscitations
- 2023Novel Hydrogel Membranes Based on the Bacterial Polysaccharide FucoPolcitations
- 2022Platinum(II) and Copper(II) complexes of asymmetric halogen-substituted [NNʹO] ligandscitations
- 2019Antiproliferative activity of heterometallic sodium and potassium-dioxidovanadium(V) polymerscitations
- 2019Structural characterization and biological properties of silver(I) tris(pyrazolyl)methane sulfonatecitations
- 2015POxylated Polyurea Dendrimerscitations
- 2015A value-added exopolysaccharide as a coating agent for MRI nanoprobescitations
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article
Novel Hydrogel Membranes Based on the Bacterial Polysaccharide FucoPol
Abstract
FucoPol, a fucose-rich polyanionic polysaccharide, was used for the first time for the preparation of hydrogel membranes (HMs) using Fe3+ as a crosslinking agent. This study evaluated the impact of Fe3+ and FucoPol concentrations on the HMs’ strength. The results show that, above 1.5 g/L, Fe3+ concentration had a limited influence on the HMs’ strength, and varying the FucoPol concentration had a more significant effect. Three different FucoPol concentrations (1.0, 1.75 and 2.5 wt.%) were combined with Fe3+ (1.5 g/L), resulting in HMs with a water content above 97 wt.% and an Fe3+ content up to 0.16 wt.%. HMs with lower FucoPol content exhibited a denser porous microstructure as the polymer concentration increased. Moreover, the low polymer content HM presented the highest swelling ratio (22.3 ± 1.8 g/g) and a lower hardness value (32.4 ± 5.8 kPa). However, improved mechanical properties (221.9 ± 10.2 kPa) along with a decrease in the swelling ratio (11.9 ± 1.6 g/g) were obtained for HMs with a higher polymer content. Furthermore, all HMs were non-cytotoxic and revealed anti-inflammatory activity. The incorporation of FucoPol as a structuring agent and bioactive ingredient in the development of HMs opens up new possibilities for its use in tissue engineering, drug delivery and wound care management.