J.Zhang et al., Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang, China, have combined a heating treatment with the addition of lignin nanocellulose (LNC) to improve the corrosion resistance of a polyvinyl alcohol coating.
Image source: Francesco Ungaro – Pexels
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.
This work has been published in Progress in Organic Coating, Volume 155, page 106224, 2021.