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ether) were tested for their ability to dissolve two distinct lignins: an industrial kraft lignin (KL) and a pilotscale organosolv lignin (OL). Among the solvents investigated, 1-methoxy-2 propanol (Dowanol™ PM, DPM) and diethylene glycol monobutyl ether (Butyl Carbitol™, BC) demonstrated high degrees of solubility (> 98 wt. % at 25 °C) that were comparable to the commonly used lignin solvent, dimethyl sulfoxide (DMSO). Lignin coatings were prepared by spray-coating the new lignin-solvent solutions on iron-phosphated steel, prior to investigation
of their subsequent morphological and electrochemical performance characteristics. It was found that KL/DPM coatings demonstrate suitable short-term (1 h, 5% NaCl) anticorrosive characteristics with an increased charge transfer resistance (Rct) compared to the bare steel (1.5×105 Ω. cm2 cf. 1.9×103 Ω. cm2). However, a prolonged (24 h) immersion resulted in a decrease in Rct values (1.1×104 Ω. cm2), which may indicate that the lignin coating alone is unable to provide long-term protection under these aggressive conditions.
- Organic solvent
- Sustainable coatings
- Corrosion protection
FingerprintDive into the research topics of 'Solubility study of lignin in industrial organic solvents and investigation of electrochemical properties of spray-coated solutions'. Together they form a unique fingerprint.
- 1 Participant of a conference, workshop, session or tutorial
8 Aug 2019
Activity: Participating in or organising an event types › Participant of a conference, workshop, session or tutorial