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

Arman Dastpak, Kirsi Yliniemi, Mariana Cecilio de Oliveira Monteiro, Sarah Höhn, Sannakaisa Virtanen, Mari Lundström, Benjamin P. Wilson

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

10 Sitaatiot (Scopus)
219 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Artikkeli454
Sivumäärä16
JulkaisuCoatings
Vuosikerta8
Numero12
DOI - pysyväislinkit
TilaJulkaistu - 8 joulukuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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