Synthesis and properties of chitosan hydrogels modified with heterocycles

• Published in: Carbohydrate polymers Vol. 75; no. 4; pp. 580 - 585
• Main Authors: Kandile, N.G., Mohamed, M.I., Zaky, H.T., Nasr, A.S., Abdel-Bary, E.M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 24.02.2009; Elsevier
• Subjects: Applied sciences; chelating agents; chelation; chemical structure; Chitosan; Crosslinking; Exact sciences and technology; Glutaraldehyde; heavy metals; Heterocyclic compounds; hydrocolloids; Hydrogels; Natural polymers; Physicochemistry of polymers; solubility; Starch and polysaccharides; swelling (materials); wastewater treatment; Crosslinking; Glutaraldehyde; Chitosan; Hydrogels; Heterocyclic compounds; Copper II; Swelling; Furan derivatives; Metal ion; Glutaral; Experimental study; Amidation; Diimide; Thermal stability; Colloidal gel; Chemical modification; Binding capacity; Chitosan derivatives; Complexing agent; Preparation; Oside polymer
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2008.08.024

Preparation and properties of chitosan modified with heterocycles in absence or presence of gluteraldehyde as a cross linker is described. New modified chitosan–heterocyclic hydrogels were prepared from chitosan and heterocyclic compounds such as N, N′-biisomaleimide, N, N′-biisophthalimide, and N, N′-phthalimidomaleimide via a crosslinking reaction. The new hydrogels chemical structure was characterized by spectral analysis (IR), X-ray diffraction, thermal gravimetric analysis (TGA), solubility, and swellability in water and different organic solvents. Evaluation of the efficiency of the new hydrogels to uptake copper and cobalt ions from aqueous systems was carried out and promising results were obtained.