Synthesis of High-Molecular-Weight Poly(Itaconic Acid) and Its Copolymers for Adsorption

Gloria Huerta-Angeles
Lecture of the lecture cycle
20.11.2025 11:00, Lecture room A

This lecture explores the synthesis and multifunctional behavior of itaconic acid (IA) and its (co)polymers as precursors for the synthesis of physically and ionically crosslinked nanocomposite hydrogels (NCHs). The (co)polymers were synthesized via free-radical polymerization in a deep eutectic solvent using VA-044, yielding high-molecular-weight polymers. Physical hydrogels prepared with Laponite RD formed stable, elastic 3D networks (G′ > G″). Characterization by WAXS/SAXS, SEM and TEM confirmed complete clay exfoliation and polymer intercalation, with further basal spacing expansion upon dye adsorption, indicating active dye intercalation sites. The hydrogels exhibited stimuli-responsive swelling with a high salt sensitivity effect. In adsorption studies with basic fuchsin (BF), the hydrogels achieved a 99.5% removal efficiency. Kinetic and thermodynamic analyses confirmed a spontaneous, exothermic physisorption process. Itaconic acid-based NCHs thus represent robust, reusable, and environmentally benign materials with outstanding adsorption, showcasing their strong potential for green and sustainable wastewater treatment. Future work will explore their adsorption towards heavy metals.

The lecture is presented in English