Synthesis and characterization of new chitosan-based Schiff base compounds

被引：66
作者：
Gavalyan, Vasak B. [1 ]
机构：
[1] AANL Fdn, Yerevan Phys Inst, 2 Alikhanyan Bros St, Yerevan 0036, Armenia
来源：
CARBOHYDRATE POLYMERS | 2016年 / 145卷
关键词：
Chitin; Chitosan; 4-(2-Haloethyl)benzaldehyde; New chitosan Schiff base; MOLECULAR-WEIGHT; CHITIN; DEACETYLATION;
D O I：
10.1016/j.carbpol.2016.02.076
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Chitin (Cn) was extracted from the armors of crustaceans Astacus leptodactylus (Lake Sevan, Armenia) and then converted to chitosan (Cs), its deacetylated derivative. Novel Schiff bases (CsSB) were synthesized by interaction of Cs with 4-(2-chloroethyl)benzaldehyde (aldehyde -1) and 4-(2-bromoethyl)benzaldehyde (aldehyde-2), and underwent dehydrohalogenation, under basic conditions (10 degrees C), to yield respective vinyl derivatives. All newly synthesized compounds were structurally characterized by solubility tests, elemental analysis, infrared spectroscopy (FTIR), thermogravimetry (TGA), proton nuclear magnetic resonance (H-1 NMR), and X-ray diffraction (XRD). (C) 2016 Elsevier Ltd. All rights reserved.
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页码：37 / 47
页数：11
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