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Polymeric material prepared from Schiff base based on O-carboxymethyl chitosan and its Cu(II) and Pd(II) complexes

Baran, Talat; Mentes, Ayfer


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        "affiliation": "Aksaray Univ, Fac Sci & Letters, Dept Chem, TR-68100 Aksaray, Turkey", 
        "name": "Baran, Talat"
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        "affiliation": "Aksaray Univ, Fac Sci & Letters, Dept Chem, TR-68100 Aksaray, Turkey", 
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    "description": "In this study, a new eco-friendly Schiff base based on O-carboxymethyl chitosan ([OCMCS-7a]) and its copper(II) and palladium(II) complexes were synthesized. Characterizations of [OCMCS-7a] and its metal complexes were conducted using FTIR, H-1 NMR, C-13 NMR, TG/DTG, XRD, SEM-EDAX, ICP, UV-VIS, GC-MS, elemental analysis, magnetic moment and molar conductivity measurements. The degree of substitution (DS) of [OCMCS-7a] was determined by elemental analysis to be 0.44. It was shown by the solubility test that [OCMCS-7a] was completely soluble in water. Surface images of chitosan, [OCMCS-7a] and its Cu(II) and Pd(II) complexes were investigated using the SEM-EDAX technique. Their thermal behaviors and crystallinities of the synthesized complexes were determined by TG/DTG and X-ray powder diffraction techniques, respectively. The metal contents of the obtained complexes were determined using an ICP-OES instrument. From the analyses, it was noted that the thermal stabilities and crystallinities of [OCMCS-7a] and its complexes decreased compared to chitosan. As a consequence of surface screening, it was also noted that the surface structure of the chitosan was smoother than that of the obtained compounds. (C) 2016 Elsevier B.V. All rights reserved.", 
    "doi": "10.1016/j.molstruc.2016.03.015", 
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      "pages": "220-227", 
      "title": "JOURNAL OF MOLECULAR STRUCTURE", 
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