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

DEMETGÜL C., Serin S.

Carbohydrate Polymers, vol.72, no.3, pp.506-512, 2008 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1016/j.carbpol.2007.09.020
  • Journal Name: Carbohydrate Polymers
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.506-512
  • Keywords: Chitosan, Metal complexes, Thermal analysis, Vic-dioxime
  • Hatay Mustafa Kemal University Affiliated: No

Abstract

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 13C CP-MAS NMR spectroscopy. The degree of substitution (DS) of v-DOCS was evaluated by 13C 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. © 2007 Elsevier Ltd. All rights reserved.