The chitosan-gelatin (bio)polyelectrolyte complexes formation in an acidic medium

被引：103

作者：

Voron'ko, Nicolay G. ^{[1
]}

Derkach, Svetlana R. ^{[1
]}

Kuchina, Yuliya A. ^{[1
]}

Sokolan, Nina I. ^{[1
]}

机构：

[1] Murmansk State Tech Univ, Murmansk 183010, Russia

来源：

CARBOHYDRATE POLYMERS | 2016年 / 138卷

基金：

俄罗斯基础研究基金会;

关键词：

Chitosan; Gelatin; (Bio)polyelectrolyte complexes; Viscosity; Absorption spectra; POLYELECTROLYTE COMPLEXES; RHEOLOGICAL PROPERTIES; DELIVERY-SYSTEM; FISH GELATIN; FILMS; ABILITY; GELS;

D O I：

10.1016/j.carbpol.2015.11.059

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The interaction of cationic polysaccharide chitosan and gelatin accompanied by the stoichiometric (bio)polyelectrolyte complexes formation has been studied by the methods of capillary viscometry, UV and FTIR spectroscopy and dispersion of light scattering. Complexes were formed in the aqueous phase, with pH being less than the isoelectric point of gelatin (pI(gel)). The particle size of the disperse phase increases along with the growth of the relative viscosity in comparison with sols of the individual components polysaccharide and gelatin. Possible models and mechanism of (bio)polyelectrolyte complexes formation have been discussed. It was shown that the complex formation takes place not only due to the hydrogen bonds, but also due to the electrostatic interactions between the positively charged amino-groups of chitosan and negatively charged amino acid residues (glutamic Glu and aspartic Asp acids) of gelatin. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：265 / 272

页数：8

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