ArticleScientific reports2025
Preparation and characterization of chitosan clay beads for water adsorption.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The microstructure of beads composed of 50 mass% α-chitosan and either montmorillonite, a clay minerals mixture (illite, pyrophyllite, and kaolinite), or palygorskite was investigated using X-ray diffraction and scanning electron microscopy. Moreover, the kinetics of water adsorption and desorption by the beads were studied at temperatures ranging from 25 to 45 °C. Adsorption-desorption cycles were conducted to assess the beads performance. The findings revealed that chitosan and montmorillonite were linked by electrostatic forces, with no intercalation of chitosan observed. Additionally, attractive electrostatic forces were noted between the clay minerals assemblage and chitosan. Conversely, repulsive electrostatic forces occurred between chitosan and palygorskite, with the clay fibers acting as fillers. The study also showed that the maximal adsorption kinetic constants for montmorillonite-containing beads, palygorskite-containing beads, and chitosan beads were 13.6 × 10
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