Publications by authors named "Stelios Alexandris"
Article Synopsis
- * The study reveals that the antimicrobial activity of GA is enhanced as the pH decreases, with fully protonated GA (at pH = 3) being effective against certain bacteria, while other strains are inhibited at higher pH levels.
- * Results show that the increased antimicrobial activity of GA hydrogels is due to GA's release into the suspension, interacting directly with bacteria, and the variations in activity are linked to the protonation state of GA rather than just
We investigate the thermal and mechanical properties of poly(ethylene glycol), PEG, networks with either solely covalent epoxy bonds (single networks, SNs) or coexisting epoxy and iron-catecholate bonds (dual networks, DNs). The latter has recently been shown to be a promising material that combines mechanical strength with significant deformability. Here, we address the previously unexplored effects of the temperature and PEG precursor molar mass on the mechanical properties of the networks.
View Article and Find Full Text PDFEfficient wound repair is crucial for mammalian survival. Healing of skin wounds is severely hampered in diabetic patients, resulting in chronic non-healing wounds that are difficult to treat. High-mobility group box 1 (HMGB1) is an important signaling molecule that is released during wounding, thereby delaying regenerative responses in the skin.
View Article and Find Full Text PDFArticle Synopsis
- A study on capillary penetration of poly(ethylene oxide) melts in nanopores reveals that the rise time (t) generally follows the Lucas-Washburn equation, but the expected relationship with pore diameter (d) isn't consistent.
- The dynamics of capillary rise vary with polymer molecular weight: lower molecular weights (≤ 100 kg/mol) rise more slowly than predicted, while higher molecular weights (≥ 500 kg/mol) rise faster.
- This research highlights a unique situation where slow capillary rise occurs in entangled polymers under strong confinement, suggesting a critical length scale influenced by molecular weight that divides different behavior regimes.