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Vol. 17 (2014 year), No. 1

A.A. Maklakova, N.G. Voron'ko, S.R. Derkach, G.I. Kadyrova, K.V. Zotova
Interaction of gelatin with ?-carrageenan according to IR spectroscopy

Low-concentrated gelatin hydrogels (2.0 % wt.) with additives of cationic polysaccharide -carrageenan in the range of low concentrations (0.1-1.0 % wt.) have been studied by the FTIR spectroscopic method. Analysis of the infrared (IR) spectra of the gelatin-polysaccharide gels has shown the characteristic bands displacement of the gelatin Amide groups to lower frequencies. At the same time there is also the fringe shift of -carrageenan sulfate groups to low frequencies. It has been shown that increasing in the -carrageenan concentration in the investigated range has no significant effect on the gels spectral characteristics. The scheme of electrostatic interactions of gelatin and -carrageenan at the polyelectrolyte complexes formation has been shown. Formation of complexes is accompanied by the conformation changes of the gelatin macromolecules.

(in Russian, стр.8, fig. 5, tables. 2, ref 22, Adobe PDF, Adobe PDF 0 Kb)