Facile synthesis of chitosan/CuO nanocomposites for potential use as biocontrol agents

• Autorzy: Siriphannon P. , Iamphaojeen Y.

Identyfikatory

DOI

10.24425/123437

• Języki publikacji: EN

Abstrakty

EN

Chitosan/CuO nanocomposites (Chi/CuO) were prepared by facile and eco-friendly technique. The 2%w/v chitosan solution was mixed with 0.5 %w/w sodium tripolyphosphate (STPP), resulting in the formation of ionically crosslinked chitosan. The crosslinked chitosan was soaked in an aqueous solution containing 0.001, 0.01 or 0.1 mol/L CuSO₄·5H₂O for 24 hrs, in which the Cu²⁺ ions were absorbed into the chitosan network, forming as the chitosan/Cu²⁺ precursors. The chitosan/Cu²⁺ precursors were hydrothermally reacted in two different basic media, i.e. NaOH and NH₄OH, at 100^°C for 24 hrs, resulting in the nano-sized CuO crystals hydrothermally grew and embedded in the crosslinked chitosan matrix. The CuO grown in the NaOH possessed larger crystallite size and higher crystallinity than that in the NH₄OH. In addition, the CuO crystallite size in the nanocomposites increased with the increase of initial concentration of Cu²⁺ starting agent due to the increase of Cu²⁺ quantity in the chitosan/Cu²⁺ precursors. The chitosan/CuO nanocomposites prepared by using 0.01 and 0.1 mol/L Cu2+ could exhibit the antibacterial activities after intimate contact with Staphylococcus aureus and Escherichia coli under JIS L 1902:1998 (Qualitative) test method, indicating their potential use as biocontrol agents.

Słowa kluczowe

EN

chitosan; CuO; nanocomposite; hydrothermal; antibacterial activity

PL

chitozan; CuO; nanokompozyt; aktywność przeciwbakteryjna

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2018
• Tom: Vol. 66, nr 3
• Strony: 311--316
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr., tab.

Twórcy

autor

Siriphannon P.

• Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand
• Functional Nanostructured Materials Laboratory, College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand

autor

Iamphaojeen Y.

• Functional Nanostructured Materials Laboratory, College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).