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Chemical structure of poly(β-cyclodextrin-co-citric acid)

✍ Scribed by Szczepan Bednarz; Marcin Lukasiewicz; Wojciech Mazela; Michal Pajda; Wiktor Kasprzyk

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
343 KB
Volume
119
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

We synthesized water‐insoluble polymers, poly(β‐cyclodextrin‐co‐citric acid)s, by heating a mixture of citric acid, cyclodextrin (CD), and Na~2~HPO~4~ as a catalyst with a 6 : 1 : 2 molar ratio at 160, 170, and 180°C for 10 and 20 min. The chemical composition of the polyesters was determined by high pressure liquid chromatography (HPLC) analysis of the polymer hydrolysates. The crosslinking mechanisms and thermal degradation of the polymers were also investigated. The polyesters contained 30–35% citric acid, 1–4% unsaturated carboxylic acids (i.e., itaconic, cis‐aconitic, trans‐aconitic, and mesaconic acids), and 60–70% CD, whereas about 40% of them were able to form inclusion complexes. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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