Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
264 0 |
SM ISO690:2012 COCÂRȚĂ, Ana-Irina, GUTSANU, Vasile, DRĂGAN, Ecaterina Stela. Structural, morphological and magnetic characterization of metal-chitosan/poly (vinyl amine) complexes. In: Journal of Polymer Research, 2017, nr. 2(24), p. 0. ISSN 1022-9760. DOI: https://doi.org/10.1007/s10965-016-1182-3 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Journal of Polymer Research | ||||||
Numărul 2(24) / 2017 / ISSN 1022-9760 /ISSNe 1572-8935 | ||||||
|
||||||
DOI:https://doi.org/10.1007/s10965-016-1182-3 | ||||||
Pag. 0-0 | ||||||
|
||||||
Rezumat | ||||||
Cu2+ and Ni2+ complexes of chitosan/poly(vinyl amine) (CS/PVAm) composites were prepared. The metal-CS/PVAm complexes were characterized by FT-IR spectroscopy, SEM-EDX, X-ray diffraction (XRD), and magnetic moment determination. FT-IR spectra of the metal-CS/PVAm complexes showed the characteristic bands of anhidroglucose unit were affected by the metal complexation, and new bands assigned to Me–N and Me-O bonds were observed. SEM images of the surface of metal-composite complexes show the influence of metal ion on the morphology of the complexes, the strong binding of Cu2+ and Ni2+, involving most of the amino groups, leading to a dense surface structure. The chemical composition on the surface of metal-CS/PVAm complexes was determined from EDX measurements. XRD provided information about the amorphous or crystalline nature of the composite and metal-composite complexes. Using magnetic susceptibility method, the oxidation degree of metal ions from the polymer phase, the homogeneous distribution of the ligand groups from the volume of the CS/PVAm beads, and the existence of the antiferromagnetic interactions between the metal ions were determined. |
||||||
Cuvinte-cheie chitosan, composites, magnetic properties, metal complexes, Poly (vinyl amine) |
||||||
|