Gel beads from novel ionic polysaccharides

Stable gelling systems were obtained by mixing polyanion solutions with solutions containing suitable polycations. Carboxymethyl cellulose was chosen as the polyanion, whilst a number of polycations, with different molecular weights and charge densities, were tested. In particular, both low molecula...

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Bibliographic Details
Published inCarbohydrate polymers Vol. 55; no. 2; pp. 163 - 169
Main Authors Miani, M, Gianni, R, Liut, G, Rizzo, R, Toffanin, R, Delben, F
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 22.01.2004
Elsevier Science
Subjects
Aminopropyl pullulan
Aminopropyl scleroglucan
Applied sciences
Carboxymethyl cellulose
Exact sciences and technology
Gel beads
Mixed gels
Natural polymers
NMR microscopy
Physicochemistry of polymers
Scanning electron microscopy
Starch and polysaccharides
Aminopropyl scleroglucan
Carboxymethyl cellulose
Scanning electron microscopy
Aminopropyl pullulan
Mixed gels
NMR microscopy
Gel beads
Cellulose(carboxymethyl)
Gelation
Experimental study
Polyelectrolyte
Morphology
Oside polymer
Hydrogel
Cellulose ether
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Summary:Stable gelling systems were obtained by mixing polyanion solutions with solutions containing suitable polycations. Carboxymethyl cellulose was chosen as the polyanion, whilst a number of polycations, with different molecular weights and charge densities, were tested. In particular, both low molecular weight polyamines and new synthetically aminated polysaccharides, derived from pullulan and scleroglucan, were used. Stable gels, in the absence of phase separation, were obtained only with flexible polycationic species. The morphological characterisation of the gel beads obtained were studied by scanning electron microscopy and NMR microscopy.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2003.09.016