“…Rice, wheat straw, soybean, kraft lignin, solvolysis lignin, bagasse, molasses, wood flour, unmodified bark, modified corn starch, coffee powder, used and unused wood, starch, modified starch, bark, grain, used paper, cotton, and wheat stalks have been used to produce different types of polyurethane foams through a liquefaction process (Timothy & Glasser, 1984;Shiraishi et al, 1985;Hirose et al, 1989;Kennedy et al, 1993;Shiraishi et al, 1993;Meikleham & Pizzi, 1994;Alma et al, 1995;Alma, 1996a, Alma et al, 1996b, Alma et al, 1996cGe & Sakai, 1996;Alma, 1997;Alfani et al, 1998;Chian & Gan 1998;Ge & Sakai 1998;Alma & Kelley, 2000;Ge et al, 2000;Alma et al, 2002;Alma et al, 2003;Cuningham et al, 2003;Alma, 2005;Banik & Sain, 2008;Chow et al, 2008).…”