Synthesis of the ketimine of chitosan and 4,6-diacetylresorcinol, and study of the catalase-like activity of its copper chelate

被引：44
作者：
Demetgul, Cahit [1 ]
机构：
[1] Mustafa Kemal Univ, Fac Sci & Letters, Dept Chem, TR-31040 Antakya, Turkey
来源：
CARBOHYDRATE POLYMERS | 2012年 / 89卷 / 02期
关键词：
Chitosan derivative; Copper (II) complex; Hydrogen peroxide decomposition; Ketimine; 4,6-Diacetylresorcinol (DAR); HETEROGENEOUS CATALYSTS; METAL-COMPLEXES; SCHIFF-BASES; CYCLOPROPANATION; DERIVATIVES;
D O I：
10.1016/j.carbpol.2012.03.013
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this study, a new chitosan derivative (ketimine) was synthesized by condensation of chitosan with 4,6-diacetylresorcinol (DAR) at heterogeneous medium. The ketimine derivative of chitosan (DAR-chitosan) was characterized by elemental (C, H, N), spectral (DR-UV-vis and FT-IR spectroscopy), structural (powder XRD), and morphological (SEM) analyses. The degree of substitution (DS) of DAR-chitosan was evaluated by elemental analysis and C-13 CP-MAS NMR spectroscopy and found to be around 12%. The copper (II) metal complex of DAR-chitosan was prepared and characterized by FT-IR, DR-UV-vis and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Thermal behaviors of the synthesized compounds were investigated by DSC and TG-DTG-DTA analysis. The catalytic activity of copper (II) complex of chitosan derivative (DAR-chitosan-Cu) was investigated on hydrogen peroxide decomposition. The copper chelate showed high efficiency (over 80%) towards the decomposition of hydrogen peroxide as heterogeneous catalyst. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：354 / 361
页数：8
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