XITOZANNI EDTA YORDAMIDA MODIFIKATSIYALASH

Xaitbayev Alisher Xamidovich; Karimov Sherali Xasanovich

doi:10.56292/SJFSU/vol31_iss5/a124

Authors

Xaitbayev Alisher Xamidovich

O‘zbekiston milliy universiteti

https://orcid.org/0000-0001-9892-8189
Karimov Sherali Xasanovich

Farg‘ona davlat universiteti

https://orcid.org/0009-0007-9947-8758

DOI:

https://doi.org/10.56292/SJFSU/vol31_iss5/a124

Keywords:

Chitosan, ethylenediaminetetraacetic acid, modification, N-acyl derivative, infrared spectrum, X-ray diffraction pattern, SEM analysis.

Abstract

The interaction products of chitosan and ethylenediaminetetraacetic acid (EDTA) are often used for the preparation of solid and hydrogel membranes. In this study, we aimed to carry out the reaction between chitosan and EDTA in solution, in contrast to the traditional solid-phase conditions that require high temperatures and shear deformations.

The reaction proceeds via an addition/elimination mechanism, in which the amide function of the amino groups is restored and amides are formed. Comparison of the infrared spectra, X-ray diffraction patterns, and electron microscopy data of chitosan and the obtained product demonstrated that the reaction proceeded to a sufficient extent.

To obtain the N-acylation product with EDTA, chitosan from Eurygaster integriceps with a molecular weight of 93.07 kDa and a degree of deacetylation of 91.6% was used. As a result of the experiments, it was established that the optimal conditions for the N-acylation reaction of chitosan with EDTA are a temperature of 40 ºC and a duration of 4 hours. Under these conditions, the product yield was 42.6%.

Author Biographies

Xaitbayev Alisher Xamidovich, O‘zbekiston milliy universiteti

O‘zbekiston milliy universiteti, kimyo fanlari doktori, professor
Karimov Sherali Xasanovich, Farg‘ona davlat universiteti

Fargʻona davlat universiteti, kimyo kafedrasi katta oʻqituvchisi, PhD

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