STRUCTURE AND PROPERTIES OF DIALDEHYDE DEXTRAN-SILK FIBROIN COMPOSITE FILMS
Authors
Sodikova Mokhinur Abdujalilovna, Shomurotov Shavkat Abduganiyevich, Abdurakhmanov Jamoliddin Abdugulomovich, Karimov Aminjon, Radjabov Otabek Iskandarovich
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In this study, composite films based on dialdehyde dextran (DAD) and silk fibroin (SF) were synthesized. DAD was obtained via periodate oxidation, introducing reactive aldehyde groups into the polysaccharide structure. SF extracted from Bombyx mori cocoons was used as the protein component. The interaction between DAD and SF occurs through the formation of Schiff base (C=N) linkages between aldehyde and amino groups, resulting in covalent crosslinking. FTIR analysis confirmed these interactions by the decrease of aldehyde bands, shifts in amide regions, and the appearance of a new band at 1620-1640 cm-1. Water vapor permeability studies showed that the film properties depend on the SF:Dex ratio, with reduced permeability observed at higher crosslinking densities. The results demonstrate that chemical crosslinking significantly influences the structure and functional properties of the composite films.
Keywords
Authors
Sodikova Mokhinur Abdujalilovna, Shomurotov Shavkat Abduganiyevich, Abdurakhmanov Jamoliddin Abdugulomovich, Karimov Aminjon, Radjabov Otabek Iskandarovich
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References:
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