Cationization of polysaccharides: A path to greener derivatives with many industrial applications
| Autor: | Héctor J. Prado, María C. Matulewicz |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Polymers and Plastics
2 3.EPOXYPROPYLTRIMETHYLAMMONIUM CHLORIDE General Physics and Astronomy Polysaccharide Chloride Chitosan chemistry.chemical_compound Materials Chemistry medicine Organic chemistry Hemicellulose Cellulose CHITOSAN chemistry.chemical_classification Organic Chemistry Ciencias Químicas Cationic polymerization Polymer Química Orgánica chemistry CATIONIC POLYSACCHARIDES Reagent CELLULOSE STARCH 3-CHLORO-2-HYDROXYTRIMETHYLAMMONIUM CHLORIDE CIENCIAS NATURALES Y EXACTAS medicine.drug |
| Zdroj: | European Polymer Journal. 52:53-75 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2013.12.011 |
| Popis: | Cationic polysaccharides are widely used in diverse areas such as water treatment, papermaking, chemical, food, cosmetic, and petroleum industries. The combination of cationic polysaccharides with anionic polymers can lead to interpolyelectrolyte complexes with hydrogel-like structures further expanding the application of the former. The aim of the present review is to fill a gap on the literature about cationization reactions of different polysaccharides and to offer a systematic and up-to-date analysis on the subject. Polysaccharides such as starch, dextran, cellulose and its derivatives, hemicellulose, pectin, chitosan, and seaweed polysaccharides among others are considered. Cationized polysaccharides can be prepared by reaction with various reagents. The main focus is on the substitution with dialkylamino hydroxypropyl and trialkylammonium hydroxypropyl ethers, being that the most common modifications involve the introduction of the 2-hydroxy-3-(trimethylammonium)propyl group by reaction of the polysaccharide with 2,3-epoxypropyltrimethylammonium chloride in an alkaline solution. An alternative to this method involves generation of the reagent in situ from 3-chloro-2-hydroxypropyltrimethylammonium chloride. In addition, polysaccharides substituted with other type of cationic groups and amphoteric derivatives are presented. Different methods of analysis, toxicological studies and applications of the modified polymers are also included. Fil: Prado, Héctor Juan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Tecnología Farmacéutica; Argentina Fil: Matulewicz, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono; Argentina |
| Databáze: | OpenAIRE |
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