Abstract
In this research study, the cross-linked cerium (IV)-alginate complex, as coordination biopolymeric compound in the granules form, was prepared. It has been indicated from the x-ray diffraction patterns that the nature of alginate complex is amorphous. Additionally, it has been revealed from the infrared absorption spectra that cerium (IV) chelates the alginate macromolecular chains in the complex. The study has displayed that the range of us OCO- is 1424 cm-1and the range of uasOCO- is 1605 cm-1. This indicates that a complexation type between the cation Ce4+ and both carboxylate and hydroxyl functional groups of alginate macromolecule is usually takes place. The study has also measured the electrical conductivity (s) of coordination biopolymeric cerium (IV)-alginate complex, as function of temperature. It has been indicated from the measured value of the electrical conductivity, i.e., 1.04 x10-9 Siemens at 20oC that the conductance of the complex lies in the range of semiconductors. The research has profoundly discussed with evaluation of the thermodynamic parameters. Afterwards, appropriate conduction mechanism based on the electrical conductivity and chemical equilibrium has also been suggested and discussed in terms of the complex stability in correlation with its coordination geometry.
Highlights
Alginate is found to be a natural anionic polyelectrolyte of binary linear heteropolymer structure, which consists of 1,4- linked α-L- guluronic and β-D-mannuronic acid units
It has been established that cross-linked complexes of tetravalent metal-alginate are usually produced as soon as the counter ions, Na+,of alginate macromolecule are substituted by the same quantity of cations of tetravalent metal
The cross-linked cerium (IV)-alginate complex, in the form of grains or granules has been produced in this study
Summary
Alginate is found to be a natural anionic polyelectrolyte of binary linear heteropolymer structure, which consists of 1,4- linked α-L- guluronic and β-D-mannuronic acid units. Conducting polymers offer the promise of achieving a new generation of polymers and materials that exhibit a high potential application in industrial technology (Nandapureet al., 2013; Kondawaret al., 2011; Jing et al, 2005; Mead, 1961; Sulanecket al., 1990) Coordination biomaterials such as, cited polysaccharides are of great importance in industrial engineering owing to their wide applications in manufacturing and industrial technology, including latex, paint, paper textile, emulsifiers, detergents, stabilizers, as well as in ceramic glaze. They are used in pharmaceutics of cosmetic like the thickeners, hand lotion, binders, hair, and shampoo components of treatment. They play an imperative role in the medication as toothpaste binders, ulcer controllers of stomach, and blood antiagulant
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