“…In this vein, and with the aim of improving the long-term sustainability of the PU industry, extensive efforts have been recently made in the academia and chemical industry to exploit biomass-derived feedstocks as precursors for different polyols. [6][7][8][18][19][20][21][22] Various renewable resources such as vegetable oils, polysaccharides (starch, agro-wastes, etc. ), microalgae and lignocellulose have been explored for the production of biobased polyols, the main constituent of PUs.…”