ArticleMolecules (Basel, Switzerland)2026
Influence of Cross-Linking Agents on the Structure and Stability of Chitosan and Carboxymethyl Chitosan Thin Films.
Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Study on 3D-printed methacrylated hyaluronic acid/methacrylated carboxymethyl chitosan/curcumin composite scaffolds for jaw bone regeneration.BMC oral health · 2026Article
- Different Magnetization Levels of Magnetite-Chitosan Nanocomposites for Co (II) Adsorption from Natural Waters.Nanomaterials (Basel, Switzerland) · 2026Article
- Dialdehyde Alginate as a Crosslinker for Chitosan/Starch Films: Toward Biocompatible and Antioxidant Wound Dressing Materials.International journal of molecular sciences · 2026Article
- Nanoencapsulation ofFrontiers in plant science · 2026Article
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Abstract
Chitosan (CS) and carboxymethyl chitosan (CMCS) are polysaccharides valued for their biocompatibility, reactivity, and film-forming capabilities. This study compares the surface characteristics and stability of CS and CMCS thin films crosslinked with citric acid (CTA), polyethylene glycol diglycidyl ether (PEGDE), and glutaraldehyde (G). Flow behavior was assessed using steady-shear measurements, while film structure, morphology, and physical properties were analyzed by infrared spectroscopy, SEM, AFM, mechanical testing, and swelling experiments. Crosslinking generated new chemical bonds in both CS and CMCS films; however, interactions in CMCS did not result in stable cross-links and were comparatively weaker. These structural modifications influenced swelling behavior and enhanced stability, particularly in CS-based systems. Before neutralization, CS/PEGDE films exhibited the lowest swelling (67% ± 19) relative to unmodified CS (118% ± 25) and crosslinked samples such as CS/G2 (185% ± 30), CS/G1 (475% ± 88), and CS/CTA (520% ± 90). After neutralization, CS/G1 and CS/CTA maintained the highest swelling capacity. In contrast, CMCS films crosslinked with CTA and G1 dissolved rapidly in aqueous media due to high water uptake, while PEGDE- and G2-modified CMCS films demonstrated stability comparable to CS. Overall, the results highlight the superior stability and tunable surface properties of CS-based films, underscoring their potential for biomedical and packaging applications.
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