Production and characterization of biopolyols and polyurethane foams from crude glycerol based liquefaction of soybean straw

► Use of crude glycerol as an alternative liquefaction solvent to petroleum analogs. ► Effects of liquefaction parameters on biopolyols and PU foams were investigated. ► Biopolyols and PU foams exhibited comparable properties to petroleum analogs. ► Impurities in crude glycerol improved properties of biopolyols and PU foams.