Vigilancia Tecnológica

ABSTRACTHere, we tried to use the natural biomass resources (lignin) to modify porous organic polymers (POPs) and expected to reduce the preparation cost and enhance the adsorption performance. Specifically, the surfactant?assisted glycerol organosolv lignin (saGO lignin) was used as the modified agents to prepare lignin modified hyper?cross?linked polymers (LHCPs) by the copolymerization and Friedel?Crafts reaction. We investigated the effect of synthesis conditions (the types and dosages of crosslinkers, the feeding amount of lignin, and so on) on the structure and adsorption performance of LHCPs. The results showed that divinyl benzene (DVB) crosslinked LHCP?D (1041.3?m2/g) showed higher specific areas (SBET) than N,N??methylene diacrylamide (MBA) crosslinked LHCP?M (183.1?m2/g), and the SBET had a certain increase with increasing the amount of DVB. Intriguingly, the SBET and micropore volume (Vmicro) of LHCPs appeared a linear decrease with the increase of lignin dosage, meanwhile, their morphology had a change from irregular block to agglomerated spherical particles, indicated their porosity and morphology can be well controlled. The Rhodamine B (RhB) adsorption experiments indicated that these LHCPs possessed fast adsorption rate (equilibrium time?