Contact
    Start Publications From Waste to Valuable Resource: Lignin as a Sustainable ...
    ←  Publication Finder
    Attension

    From Waste to Valuable Resource: Lignin as a Sustainable Anti-Corrosion Coating

    Year: 2018

    Journal: Coatings, Volume 8, DEC

    Authors: Dastpak, Arman; Yliniemi, Kirsi; Monteiro, Mariana Cecilio de Oliveira; Hoehn, Sarah; Virtanen, Sannakaisa; Lundstrom, Mari; Wilson, Benjamin P.

    Organizations: Technology Industries of Finland Centennial/Jane and Aatos Erkko Foundations "Future Makers: Biorefinery Side Stream Materials for Advanced Biopolymer Materials (BioPolyMet)"; Academy of Finland (NoWASTE) [297962]

    Keywords: stainless steel; polymer coatings; anodic/cathodic protection; cyclic voltammetry; infrared (IR) spectroscopy

    In this study, a waste of biorefinery-lignin-is investigated as an anticorrosion coating on stainless steel. Corrosion behavior of two lignin types (hardwood beech and softwood spruce) was studied by electrochemical measurements (linear sweep voltammetry, open circuit potential, potentiostatic polarization, cyclic potentiodynamic polarization, and electrochemical impedance measurements) during exposure to simulated body fluid (SBF) or phosphate buffer (PBS). Results from linear sweep voltammetry of lignin-coated samples, in particular, demonstrated a reduction in corrosion current density between 1 and 3 orders of magnitude cf. blank stainless steel. Furthermore, results from cross cut adhesion tests on lignin-coated samples demonstrated that the best possible adhesion (grade 0) of ISO 2409 standard was achieved for the investigated novel coatings. Such findings suggest that lignin materials could transform the field of organic coatings towards more sustainable alternatives by replacing non-renewable polymer coatings.
    View publication