Synthesis and characterization of a new vic-dioxime derivative of chitosan and its transition metal complexes


Demetgul C., SERİN S.

CARBOHYDRATE POLYMERS, cilt.72, ss.506-512, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 72 Konu: 3
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.carbpol.2007.09.020
  • Dergi Adı: CARBOHYDRATE POLYMERS
  • Sayfa Sayıları: ss.506-512

Özet

In this study, a new chitosan derivative including vic-dioxime was synthesized by adding anti-monochloroglyoxime to chitosan (CS) at heterogeneous medium. The vic-dioxime-chitosan (v-DOCS) was characterized by elemental analysis (C, H, N), FT-IR and C-13 CP-MAS NMR spectroscopy. The degree of substitution (DS) of v-DOCS was evaluated by C-13 CP-MAS NMR spectroscopy and found to be 13.57%. As a result of the solubility test, unlike chitosan, v-DOCS were not dissolved in the aqueous solution of acetic acid. Metal complexes of v-DOCS with Co (II) and Cu (II) were synthesized and characterized by FT-IR and atomic absorption spectroscopy (AAS). Surface characterizations of CS, v-DOCS and v-DOCS-Copper (II) were performed by scanning electron. microscope (SEM). Thermal behaviors of the synthesized compounds were investigated by TG-DTA analysis. (C) 2007 Elsevier Ltd. All rights reserved.