Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 50, Issue 2, Pages 428-431Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2011.12.027
Keywords
Alginate derivatives; Reaction conditions; Esterification
Funding
- Priority Academic Program Develoment of Jiangsu Higher Education Institutions
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [08KJB530007]
- State Key Laboratory of Food Science and Technology [SKLF-KF-200906]
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Lauryl grafted sodium alginate (SA-C-12) was prepared by the reaction between sodium alginate and dode-canol with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) as a coupling agent. The structure of SA-C-12 was confirmed by FT-IR, H-1 NMR, and thermoanalysis. Meantime, the degree of substitution (DS) of SA-C-12 was determined by GC. The reaction conditions were studied systematically, which included reaction time and temperature, the molar ratio of hexuronic acid in alginate to dodecanol (N-hexuronic/N-dodecanol) and N-hexuronic/N-EDC, the mass of toluenesulfonic acid. By investigating the relationship between these conditions and DS, the optimal conditions with the maximum DS were obtained. (C) 2011 Elsevier B.V. All rights reserved.
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