Univerzita PardubiceFakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

Semi-IPN hydrogels for chemical delivery: tailoring transport and mechanical properties

Autoři: Trudičová Monika

Rok: 2025

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Semi-IPN hydrogels for chemical delivery: tailoring transport and mechanical properties	Polyvinyl alcohol (PVAl) hydrogels are versatile materials with applications across various fields, including biomedical engineering, water purification, food packaging, and sensor technology. The effectiveness of these applications strongly depends on the mechanical and transport properties of the hydrogels, making it essential to explore new ways to tailor their performance. One promising approach is the incorporation of semi-interpenetrating polymer networks (semi-IPNs), where a secondary polymer is physically embedded within the hydrogel matrix. This strategy allows for controlled modifications of the hydrogel’s mechanical and transport properties. This study investigates the impact of polyelectrolyte additives on the mechanical strength and transport properties of PVAl-based hydrogels, with a particular focus on the diffusion of dye molecules. Hydrogels were prepared by cyclic freezing and thawing. To enhance material properties, sodium polystyrene sulfonate was introduced into the hydrogel network. Oscillatory rheometry was used to evaluate mechanical properties, particularly through strain sweep tests, which define the material's linear viscoelastic region. Macroscopic diffusion experiments, utilizing methylene blue and rhodamine 6G as tracer molecules, were conducted to assess transport behavior in modified versus unmodified hydrogels.