Pinewood shaves purchased from Versele-Laga (Deinze, Belgium), and
Stipa tenacissima grass (referred to as
Stipa throughout this paper), kindly provided by a Tunisian company, were used as raw materials for the thermochemical liquefaction process. The solvents
2-ethyl hexanol (2EH; ≥90 wt.%),
propylene glycol (PG; ≥90 wt.%),
2-methyl tetrahydrofuran (2-MTHF; ≥99.5 wt.%) and
deuterated chloroform (≥99.8 atom % D), as well as the catalyst
p-toluenesulfonic acid (PTSA; ≥98 wt.%), were purchased from Sigma-Aldrich (Sigma-Aldrich Ltd., St. Louis, MO, USA).
N,
N-dimethylformamide (DMF; >99.5 wt.%) was obtained from Carlo Herba (Carlo Erba Reagents S.A.S., Val De Reuil, France). Desmodur
® Eco N7300, a bio-based aliphatic 1,5-pentamethylene polyisocyanate, was obtained from Covestro (Covestro AG, Leverkusen, Germany). It has an NCO content of about 21.9%, a viscosity at 23 °C of ca. 9500 mPa.s, less than 0.3% of monomeric PDI and an equivalent weight (EW) of ca. 195. The 0.5 M and 0.1 M KOH solutions used in the determination of the polyols’ acid and hydroxyl values were purchased from Honeywell (Charlotte, NC, USA), and the solvent
tetrahydrofuran (THF; 99.8 wt.%) was purchased from Fisher Scientific (Thermo Fisher Scientific Inc., Waltham, MA, USA). The DC01 carbon steel plates used were kindly provided by Voestalpine AG (Linz, Austria).
Silva T.A., Marques A.C., dos Santos R.G., Shakoor R.A., Taryba M, & Montemor M.F. (2023). Development of BioPolyurethane Coatings from Biomass-Derived Alkylphenol Polyols—A Green Alternative. Polymers, 15(11), 2561.