Lignin-derived macroporous carbon foams prepared by using poly(methyl methacrylate) particles as the template

摘要: Abstract An efficient route for the synthesis of lignin-derived carbon foams by thermal decomposition an organic colloid template is described. Lignin, resorcinol, and formaldehyde were reacted polycondensation into a crosslinked phenolic resin network in presence colloidal poly(methyl methacrylate) microspheres as sacrificial template. Subsequently, carbonization was carried out at 800 °C to fabricate with porous structural frameworks. Lignin used excellent candidate replacing resorcinol or other substances due its high yield above 50%. The prepared had partially open cell structures. bulk density porosity 0.37–0.60 g/mL 68.5–82.8%, respectively. Furthermore, addition lignin increased mechanical properties strength foams.