| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 227201 | Journal of Industrial and Engineering Chemistry | 2016 | 6 Pages |
•Sunflower stalk saccharification residues was liquefied to prepare biopolyols.•Unrefined crude glycerol byproduct was employed as a liquefaction solvent.•The biopolyols were produced with 59% conversion at optimal condition.•Hydroxyl and acid numbers of biopolyols were 1460 mg KOH/g and 11 mg KOH/g.•The biopolyol was suitable for polyurethane synthesis.
Biopolyol was produced by the liquefaction of the sunflower stalk saccharification residues using a biodiesel-derived crude glycerol as a liquefaction solvent. Biopolyol was produced under the optimal conditions of 10% (w/w) biomass loading, 4% (w/w) sulfuric acid loading at 150 °C and for 60 min. Biomass conversion was 59%, and the hydroxyl and acid number numbers were 1460 and 11 mg KOH/g biopolyol, respectively. The bio-PU was synthesized from the biopolyol and methylene diphenyl diisocyanate (MDI). Fourier transform infrared spectroscopy (FTIR) showed that bio-PU was successfully synthesized from biopolyols and MDI.
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