Arman Dastpak, Tainise V. Lourençon
In the present study, six organic solvents that are commonly used in the paint industry (1-butanol, 1-methoxy-2-propanol, 2-propanol, butyl acetate, propylene glycol monomethyl ether acetate, and diethylene glycol monobutyl ether) were tested for their ability to dissolve distinct lignins: an industrial kraft lignin (KL) and a pilot-scale 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 non-phosphated steel, prior to investigation of their subsequent morphological and electrochemical performance characteristics. It was found that KL/PM coatings demonstrate substantial short-term (1 h, 5% NaCl) anticorrosive characteristics with an increased charge transfer resistance (Rct) compared to the bare steel (1.5 × 10^6 Ω, cm² vs. 1.9 × 10^2 Ω, cm²). However, a poor electrochemical performance of OL/BC coatings was noted over time, which may indicate that the lignin coating is unable to provide long-term corrosion protection under the aggressive conditions.
@article{462ad2af-a4d6-40a7-8fee-34cba63edd2d,
title={Solubility study of lignin in industrial},
author={Arman Dastpak and Tainise V. Lourençon},
year={2026},
language={en}
}TY - JOUR TI - Solubility study of lignin in industrial AU - Arman Dastpak AU - Tainise V. Lourençon PY - 2026 LA - en ER -
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