Synthesis, characterization and thermal dehydration and degradation kinetics of chitosan Schiff bases of o-, m- and p-nitrobenzaldehyde

被引：0
作者：
K. Muraleedharan
C. H. Viswalekshmi
K. Sarada
机构：
[1] University of Calicut,Department of Chemistry
来源：
Polymer Bulletin | 2017年 / 74卷
关键词：
Chitosan Schiff base; Dehydration kinetics; Degradation kinetics; Isoconversional methods; Maximum rate methods;
D O I：
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摘要：
The chitosan Schiff bases were synthesised through the condensation reaction of chitosan with o-, m- and p-nitrobenzaldehyde (abbreviated as CSB-o, CSB-m and CSB-p) in the ratio 1:1 and were characterised by means of FTIR, UV, XRD and SEM. The thermal dehydration and degradation kinetics of all these Schiff bases were studied using different isoconversional and maximum rate (peak) methods, viz. Kissinger–Akahira–Sunose (KAS), Tang, Starink, Flynn–Wall–Ozawa (FWO) and Bosewell from DSC data and the thermal stability from TG. The activation energy values of thermal dehydration and degradation reactions obtained from isoconversional methods of FWO and Bosewell are slightly higher than that obtained from other methods. All the isoconversional and maximum rate (peak) methods yielded consistent values of Eα for both the dehydration and degradation reactions and is in the order CSB-o < CSB-m < CSB-p. The Schiff bases observed (from TG) the same order of thermal stability.
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页码：39 / 54
页数：15
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[11]  
Combes C(2004)Preparation of cyclomaltoheptanose from chitosan and its derivative via glyoxal and glutaraldehyde Carbohydr Res 339 313-319
[12]  
Buschmann MD(2005)Synthesis and antimicrobial activity of water soluble chitosan derivative with a fiber reactive group Carbohydr Polym 60 277-282
[13]  
Hoemann CD(1997)Synthesis and characterization of Schiff bases from chitosan and salicylaldehyde derivatives Anal Chim Acta 343 145-153
[14]  
Leroax JC(1980)The Schiff bases of salicylaldehyde and aminopyridines as highly sensitive analytical reagents Carbohydr Res 83 5-7
[15]  
Atkinso BL(1998)Enhancement of the metal chelating properties of chitin and chitosan Polymer 39 5121-5129
[16]  
Binelte F(2002)Interaction of Cu(II) on Polym Bull 48 159-166
[17]  
Selmani A(2004)-(2-pyridylmethyl) and Sep Purif Technol 38 43-74
[18]  
Hsu SH(2010)-(4-pyridylmethyl) chitosan J Environ Manage 91 798-806
[19]  
Whu SW(2010)-Alkylation of chitin and some characteristics of novel derivatives J Hazard Mat 177 300-306
[20]  
Tsai CL(1998)Interactions of metal ions with chitosan-based sorbents: a review Polymer 39 6549-6554
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