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Potential environmental application of a tough and temperature-responsive nanocomposite hydrogel based on poly(N-isopropylacrylamide-co-sodium methacrylate) and clay
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SYSNO ASEP 0600250 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Potential environmental application of a tough and temperature-responsive nanocomposite hydrogel based on poly(N-isopropylacrylamide-co-sodium methacrylate) and clay Author(s) Strachota, Beata (UMCH-V) RID
Strachota, Adam (UMCH-V) RID, ORCID
Mares Barbosa, Silvia (UMCH-V)
Pavlova, Ewa (UMCH-V) RID
Tohamy, H.-A. S. (EG)
El-Sakhawy, M. (EG)
Kamel, S. (EG)Article number 7 Source Title International Journal of Environmental Research - ISSN 1735-6865
Roč. 19, č. 1 (2025)Number of pages 18 s. Language eng - English Country CH - Switzerland Keywords poly(N-isopropyl acrylamide) ; radical polymerization ; clay Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects LUAUS23004 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 001345093300001 EID SCOPUS 85208424448 DOI https://doi.org/10.1007/s41742-024-00666-7 Annotation A simple method was proposed to prepare a tough and ultra-extensible hydrogel with ultra-fast response to temperature and pH and a high potential to adsorb heavy metals by utilizing poly (N-isopropyl acrylamide) (PNIPAm), sodium methacrylate (SMA), and the crosslinking process using Laponite RDS clay. Transmission electron microscopy was used to examine the distribution of clay in the hydrogels. The hydrogels' exceptional mechanical and tensile qualities are a result of the precise physical crosslinking caused by Laponite RDS clay and the ultra-long polymer chains that were produced because of the selected polymerization conditions. A tiny quantity (1.5 mol%) of SMA co-monomer adds a strong pH response and improves the effectiveness of metal removal, whereas PNIPAm produces clearly defined temperature responsiveness. In the meantime, as the SMA content increased, the equilibrium swelling increased, but when the loading of Laponite RDS clay increased, it decreased. It has been shown that hydrogels can effectively adsorb Cr(VI) from aqueous solutions. The removal effectiveness and stability of the hydrogels were enhanced by adding SMA, with efficiency values reaching 99.93%. Given their great swelling, mechanical toughness, and high Cr(VI) removal efficiency, the investigated hydrogels appear highly suitable as an adsorbent for water treatment. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2026 Electronic address https://link.springer.com/article/10.1007/s41742-024-00666-7
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