Chitosan nanocomposite coatings with enhanced corrosion inhibition effects for copper

Bahari, Helma Sadat (author): KTH,Material- och nanofysik,Univ Tehran, Coll Sci, Sch Phys, North Kargar St, POB 14395-547, Tehran, Iran.

Savaloni, Hadi (author): Univ Tehran, Coll Sci, Sch Phys, North Kargar St,POB 14395-547, Tehran, Iran.

(creator_code:org_t)

Elsevier BV, 2020
2020
English.
In: International Journal of Biological Macromolecules. - : Elsevier BV. - 0141-8130 .- 1879-0003. ; 162, s. 1566-1577

Related links:: https://doi.org/10.1...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

A biopolymer coating on copper was prepared based on chitosan nanocomposite and its corrosion inhibition efficiency was investigated. Inclusion of silica nanoparticles substantially reduces swelling ratio of chitosan coating while enhancing its thermal stability. The corrosion resistance of chitosan-based coatings is improved by introducing 2-mercaptobenzothiazole and silica in the matrix. It is found that upon crosslinking the chitosan coatings, a higher corrosion resistance could be achieved and the highest inhibition efficiency for chitosan nanocomposite coatings is calculated as 85%. The corrosion mechanism is found closely related to mass transition and diffusion process, and also the polarization resistance contributes to the impedance. Calculated impedance using Kramers-Kronig transformation shows good agreement with experimental values, thus validating the impedance measurements. This study exhibits the enhanced efficiency of nanocomposite and potential of chitosan coatings in corrosion prevention for copper.

By the author/editor: Bahari, Helma Sa ...; Fei, Ye, 1979-; Toledo-Carrillo, ...; Leliopoulos, Chr ...; Savaloni, Hadi; Dutta, Joydeep, ...

About the subject

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