Chemical structure of poly(β‐cyclodextrin‐co‐citric acid) |
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Authors: | Szczepan Bednarz Marcin Lukasiewicz Wojciech Mazela Michal Pajda Wiktor Kasprzyk |
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Affiliation: | 1. Department of Engineering and Machinery for Food Industry, University of Agriculture, Balicka 122 St., 30‐149 Krakow, Poland;2. Department of Carbohydrates, University of Agriculture, Balicka 122 St., 30‐149 Krakow, Poland;3. Institute of Leather Industry, Cracow Branch;4. Zakopianska 9 St., 30‐418 Krakow;5. Poland |
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Abstract: | We synthesized water‐insoluble polymers, poly(β‐cyclodextrin‐co‐citric acid)s, by heating a mixture of citric acid, cyclodextrin (CD), and Na2HPO4 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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Keywords: | crosslinking degradation high performance liquid chromatography host– guest systems polyesters |
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