From Chemistry Towards Technology Step-By-Step From Chemistry Towards Technology Step-By-Step От химии к технологии шаг за шагом 2782-1900 96870 10.52957/2782-1900-2025-6-1-99-106 Научные статьи Scientific articles Научные статьи Effect of carbon nanotube functionalisation on the strength properties of nanocomposite cryogels based on polyvinyl alcohol Effect of carbon nanotube functionalisation on the strength properties of nanocomposite cryogels based on polyvinyl alcohol Пыкин Алексей Леонидович Pykin Alexey Leonidovich pkinaleksey@icloud.com Борисова Наталья Николаевна Borisova Natalia Nikolaevna bnn008@yandex.ru Жеребцов Сергей Игоревич Zherebcov Sergey Igorevich sizh@yandex.ru

доктор химических наук;

doctor of chemical sciences;

 Федеральный исследовательский центр угля и углехимии СО РАН Кемерово Россия Федеральный исследовательский центр угля и углехимии СО РАН Кемерово Russian Federation Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний Кемерово Россия Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний Kemerovo Russian Federation Федеральный исследовательский центр угля и углехимии Сибирского отделения Российской Академии Наук Россия Федеральный исследовательский центр угля и углехимии Сибирского отделения Российской Академии Наук Russian Federation 28 03 2025 28 03 2025 6 1 99 106 19 11 2024 21 02 2025 https://chemintech.ru/en/nauka/article/96870/view

The paper investigates the effect of carbon nanotube (CNT) functionalisation on the strength properties of nanocomposite cryogels based on polyvinyl alcohol (PVS). The functionalisation of CNTs using different functional groups focuses on improving the adhesion of nanotubes and polymer matrix. It can significantly improve the mechanical properties of the obtained composites. During the experiment we performed tensile strength tests with different concentrations of unmodified, oxidised (CNT-COOH), and polyvinyl alcohol modified (CNT-PVS) carbon nanotubes. Hence, the introduction of CNTs and CNT COOH into the PVA cryogel matrix causes a significant increase in the strength properties. However, a statistically significant difference in the strength properties of composites with CNTs and CNT-COOH was only at a concentration of 0.1%. At the same time, the introduction of CNT-PVC up to a concentration of 0.5% enhances the strength characteristics of cryogels. The further increase in the concentration of CNT-PVC causes a decrease in the tensile strength.

The paper investigates the effect of carbon nanotube (CNT) functionalisation on the strength properties of nanocomposite cryogels based on polyvinyl alcohol (PVS). The functionalisation of CNTs using different functional groups focuses on improving the adhesion of nanotubes and polymer matrix. It can significantly improve the mechanical properties of the obtained composites. During the experiment we performed tensile strength tests with different concentrations of unmodified, oxidised (CNT-COOH), and polyvinyl alcohol modified (CNT-PVS) carbon nanotubes. Hence, the introduction of CNTs and CNT COOH into the PVA cryogel matrix causes a significant increase in the strength properties. However, a statistically significant difference in the strength properties of composites with CNTs and CNT-COOH was only at a concentration of 0.1%. At the same time, the introduction of CNT-PVC up to a concentration of 0.5% enhances the strength characteristics of cryogels. The further increase in the concentration of CNT-PVC causes a decrease in the tensile strength.

 carbon nanotubes polyvinyl alcohol cryogels functionalisation composite materials carbon nanotubes polyvinyl alcohol cryogels functionalisation composite materials

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