Projekteja vuodessa
Abstrakti
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 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.
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.
Alkuperäiskieli | Englanti |
---|---|
Artikkeli | 112310 |
Sivumäärä | 11 |
Julkaisu | Industrial Crops and Products |
Vuosikerta | 148 |
DOI - pysyväislinkit | |
Tila | Julkaistu - kesäk. 2020 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Solubility study of lignin in industrial organic solvents and investigation of electrochemical properties of spray-coated solutions'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 1 Päättynyt
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NoWASTE: Uudenlainen arvometallien talteenotto sivuvirroista
Lundström, M. (Vastuullinen tutkija)
01/09/2016 → 31/12/2020
Projekti: Academy of Finland: Other research funding
Laitteet
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Raaka-aineiden tutkimusinfrastruktuuri
Karppinen, M. (Manager)
Kemian tekniikan korkeakouluLaitteistot/tilat: Facility
Aktiviteetit
- 1 Konferenssiin, työpajaan, tilaisuuteen tai tapahtumaan osallistuminen.
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Annual Meeting of the International Society of Electrochemistry
Wilson, B. (Osallistuja), Dastpak, A. (Member), Yliniemi, K. (Member), Höhn, S. (Member), Monteiro, M. (Member), Virtanen, S. (Member) & Lundström, M. (Member)
8 elok. 2019Aktiviteetti: Konferenssiin, työpajaan, tilaisuuteen tai tapahtumaan osallistuminen.
Tutkimustuotos
- 66 Viittaukset
- 1 Article
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From Waste to Valuable Resource: Lignin as a Sustainable Anti-Corrosion Coating
Dastpak, A., Yliniemi, K., Cecilio de Oliveira Monteiro, M., Höhn, S., Virtanen, S., Lundström, M. & Wilson, B. P., 8 jouluk. 2018, julkaisussa: Coatings. 8, 12, 16 Sivumäärä, 454.Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu
Open accessTiedosto54 Sitaatiot (Scopus)321 Lataukset (Pure)