Corrosion protection properties of an environmentally friendly polyvinyl alcohol coating reinforced by a heating treatment and lignin nanocellulose

A method combining a heating treatment with the addition of lignin nanocellulose (LNC) was designed to improve the corrosion resistance of a polyvinyl alcohol coating. The heating treatment induced an elimination reaction occurred between the hydroxyl groups, which significantly reduced the water transport channels formed by the intermolecular forces of the hydroxyl groups. Moreover, the lignin nanocellulose worked effectively as a barrier against the penetration of corrosive media. Due to the synergistic effects of the heating treatment and the addition of lignin nanocellulose, the corrosion resistance of the composite coating was greatly improved.

Automated summary

The heating treatment induced an elimination reaction between hydroxyl groups, reducing water transport channels formed by intermolecular forces. Lignin nanocellulose acted as an effective barrier against corrosive media penetration. The synergistic effects of heating treatment and lignin nanocellulose addition greatly improved the corrosion resistance of the composite coating.