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

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
187 Downloads (Pure)

Abstract

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.
Original languageEnglish
Article number454
Number of pages16
JournalCoatings
Volume8
Issue number12
DOIs
Publication statusPublished - 8 Dec 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Stainless steel
  • Polymer coatings
  • Anodic/cathodic protection
  • Cyclic voltammetry
  • Infrared (IR) spectroscopy

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  • Equipment

  • Activities

    • 4 Public or invited talk
    • 2 Chair of conference, workshop, panel, session or tutorial
    • 1 Participant of a conference, workshop, session or tutorial
    • 1 Conference presentation

    Recycling for the Future

    Ben Wilson (Speaker)

    24 Jan 2019

    Activity: Talk or presentation typesPublic or invited talk

    Annual Meeting of the International Society of Electrochemistry

    Ben Wilson (Participant), , Arman Dastpak (Member), , Kirsi Yliniemi (Member), , Sarah Höhn (Member), , Mariana Monteiro (Member), , Sannakaisa Virtanen (Member), & Mari Lundström (Member)

    8 Aug 2019

    Activity: Participating in or organising an event typesParticipant of a conference, workshop, session or tutorial

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