کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1386497 | 982511 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and characterization of a new vic-dioxime derivative of chitosan and its transition metal complexes Synthesis and characterization of a new vic-dioxime derivative of chitosan and its transition metal complexes](/preview/png/1386497.png)
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.
Journal: Carbohydrate Polymers - Volume 72, Issue 3, 16 May 2008, Pages 506–512