Liquefaction of Lignin Using Chemical Decomposition and Its Application to Polyurethane Foam.
ACS Omega
; 6(16): 10745-10751, 2021 Apr 27.
Article
em En
| MEDLINE
| ID: mdl-34056228
ABSTRACT
To utilize the chemical application of lignin (LN), a decomposition reaction was carried out to cleave chemical bonds. Indeed, a liquefaction process is essential for the chemical use of lignin to achieve a uniform reaction and maximize the chemical utility of lignin. To this end, hydroxyl radicals were adopted as a powerful oxidation agent, and FT-IR results confirmed the cleavage of the ether linkages. Additionally, the water solubility of LN significantly increased after decomposition, and dissolution levels up to 0.5 g·mL-1 were obtained. Using these high solubility properties in water, NMR and DLS analyses were performed. In particular, an average particle diameter of 300 ± 240 nm was found, corresponding to the size of polydisperse l-LN. By controlling size uniformity and using high water-solubility levels, polyurethane foams were manufactured using l-LN.
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MEDLINE
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En
Ano de publicação:
2021
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Article