Structure and thermal properties of chitin and chitosan from various sources

Ашуров, Н. Ш.; Abdurazakov, Muhitdin; Yugay, S. M.; Атаханов, А. А.; Gulamjanov, Kh A; Turaev, J I; Akhymbetova, G D; Рашидова, С. Ш.

doi:10.1088/1742-6596/2388/1/012011

J. Phys.: Conf. Ser.

2022

DOI: 10.1088/1742-6596/2388/1/012011

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Structure and thermal properties of chitin and chitosan from various sources

Н. Ш. Ашуров¹,

Muhitdin Abdurazakov

S. M. Yugay

et al.

Abstract: The structural and thermal properties of chitin and chitosan isolated from different sources (Artemia sp.cysts (from the Aral Sea) and Silkworm pupae (Bombyx mori)) were studied by using FTIR, XRD, and DSC. It is shown, that the chitin and chitosan samples from different sources have a similar structure, however, depending on the sources differ in the ratio of the phase composition. Two types of crystalline modification of the structure (α-and β-modifications) are observed for chitin isolated from Artemia sp.c… Show more

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Cited by 3 publications

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Extraction, chemical, and dual-functional memory and threshold resistive switching characteristics of Elaeodendron buchananii extract

Dlamini,

Vallabhapurapu,

Nambooze

et al. 2023

Materials Today Communications

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Extraction, chemical, and dual-functional memory and threshold resistive switching characteristics of Elaeodendron buchananii extract

Dlamini,

Vallabhapurapu,

Nambooze

et al. 2023

Materials Today Communications

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Enhancing hemp fiber performance: insights into chitosan treatment and structural evolution

Wang,

Zhao,

Cheung

et al. 2024

Textile Research Journal

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Hemp fiber, recognized for its eco-friendliness, wide availability, and biodegradability, stands as a renewable resource with promising applications. To fully harness its potential, it is crucial to study the relationship between chitosan concentration and both the mechanical and thermal properties of hemp fiber. Understanding these effects can provide a direction to improve the properties and functionalities of hemp fiber, which are essential for many applications, including textiles and construction and automotive materials. Chitosan is known to enhance the antimicrobial and adsorption properties of fibers by changing the chemical properties of the fiber surface. However, up to now, a very limited number of studies have focused on the exact effect of chitosan on the mechanical and thermal stability properties of hemp fibers. Here, the effect of treatment with different concentrations of chitosan solutions is investigated to enhance the properties of hemp fibers and the treated hemp fibers are characterized. It is found that chitosan solution treatment can effectively improve the various properties of hemp fibers. The chitosan treatment improved the surface roughness of hemp fibers. The tensile strength and flexibility of hemp fibers were enhanced. The CSHF-1.5% sample exhibited the highest tensile strength of 616.11 MPa and the lowest tensile modulus of 15.61 GPa. The fiber swelling rate increased to 24.73% at a chitosan solution concentration of 1.5%. The results of thermogravimetric analysis and differential scanning calorimetry analysis demonstrated the effectiveness of chitosan solution treatment in enhancing the thermal stability of hemp fibers. These findings propose a promising method for a significant modification of hemp fiber's mechanical and thermal stability.

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Development of a Multifunctional Chitosan-Based Composite Film from Crab Shell (Portunus segnis) and Algae (Ulva lactuca) with Enhanced Antioxidant and Antimicrobial Properties for Active Food Packaging

Zaghbib,

Abdullah,

Romero

2024

Foods

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Eco-friendly, bioactive and edible films from renewable resources are increasingly regarded as viable replacements for petroleum-based packaging. This study investigates the application of Ulva lactuca macroalgae powder (ULP) as an active additive in crab (Portunus segnis) chitosan-based films for natural food packaging. Films with ULP concentrations of 0.5, 1.5, and 2.5% were prepared using a solvent-casting method with glycerol as a plasticizer. Their physicochemical, mechanical, functional, and biological properties were evaluated comprehensively. Fourier-transform infrared spectroscopy revealed intermolecular interactions between ULP’s polyphenolic compounds and the chitosan matrix, enhancing the films’ structural integrities. ULP’s incorporation reduced the moisture content, water solubility, lightness (L*), redness (a*), and whiteness index values while significantly (p < 0.05) increasing the yellowness (b*), total color difference (ΔE), yellowness index (YI), tensile strength (TS), and elongation at break (EB). The antioxidant activity improved in a concentration-dependent manner, as evidenced by the high free-radical scavenging capacity. Moreover, antimicrobial tests showed significant inhibitory effects against pathogenic strains. Biodegradability tests confirmed that the films decomposed entirely within 12 days under soil burial conditions, reinforcing their environmental compatibility. These results highlight the multifunctional potential of chitosan–ULP composite films, combining enhanced mechanical properties, bioactivity, and sustainability. By utilizing renewable and biodegradable materials, this work contributes to reducing waste and promoting resource efficiency, aligning with the principles of a circular economy and environmental preservation.

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Structure and thermal properties of chitin and chitosan from various sources

Cited by 3 publications

References 6 publications

Extraction, chemical, and dual-functional memory and threshold resistive switching characteristics of Elaeodendron buchananii extract

Extraction, chemical, and dual-functional memory and threshold resistive switching characteristics of Elaeodendron buchananii extract

Enhancing hemp fiber performance: insights into chitosan treatment and structural evolution

Development of a Multifunctional Chitosan-Based Composite Film from Crab Shell (Portunus segnis) and Algae (Ulva lactuca) with Enhanced Antioxidant and Antimicrobial Properties for Active Food Packaging

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