Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


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Smirnov A. K., Shipovskaya A. B. Synthesis and properties of grafted copolymers of xanthan and glucomannan with acrylic monomers. Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2023, vol. 23, iss. 2, pp. 185-196. DOI: 10.18500/1816-9775-2023-23-2-185-196, EDN: DCBOBM

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547.458.6[544.412.1+544.723.21]
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DCBOBM

Synthesis and properties of grafted copolymers of xanthan and glucomannan with acrylic monomers

Autors: 
Smirnov Anton K. , Saratov State University
Shipovskaya Anna B., Saratov State University
Abstract: 

Graft copolymers of polysaccharides with acrylic monomers combine biodegradability, biocompatibility, the environmental friendliness of natural polymers and the increased thermal stability, chemical and mechanical resistance of synthetic polymers. This paper describes our search and analysis of the literature in English for 2002–2022 devoted to the graft polymerization of acrylamide, acrylic acid and 2-acrylamido2-methylpropanesulfonic acid onto xanthan and glucomannan macromolecular chains. It has been found that the synthesis of grafted copolymer chains proceeds by a radical polymerization mechanism using thermal homolytic decomposition of the initiator or microwave irradiation, or radiation initiation and frontal polymerization in some cases. Depending on the method of the reaction, the synthesis time of a graft copolymer varies from several minutes to several hours. The infl uence of the synthesis conditions and parameters on the monomer conversion, structure and properties of the resulting polymer has been considered. It has been found that decreasing the polysaccharide/monomer ratio and increasing the initiator concentration raise the effi ciency and degree of grafting. Several methods for characterization of graft copolymers are discussed, including: IR spectroscopy to analyze the chemical structure of a sample, scanning electron microscopy to characterize structure, supramolecular ordering and porosity, diff erential thermal analysis to evaluate thermal eff ects and thermal stability. The eff ect of the synthesis conditions and the pH of the sorption medium on the water absorption and sorption capacity of this class of graft copolymers are discussed. The broad potential of graft copolymers for repeated cycles of absorption and release of liquid medium without loss of functional properties has been found. This opens prospects for the use of graft copolymers of xanthan and glucomannan with acrylic monomers as materials for water purifi cation from metal ions and cationic dyes, targeted delivery and prolonged action of drugs and wound coatings for wound treatment.

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Received: 
01.03.2023
Accepted: 
10.03.2023
Published: 
30.06.2023
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