Emulsion templated hydrophilic polymethacrylates. Morphological features, water and dye absorption

摘要

Emulsions with high volume fraction of droplet phase were used to prepare macroporous polymers (polyHIPEs) of dimethylaminoethyl methacrylate (DMAEMA) and 2-hydroxyethyl methacrylate (HEMA) crosslinked with various amounts of ethylene glycol dimethacrylate (EGDMA) and N,N'-methylene bisacrylamide (MBAA), respectively. Monoliths with cellular interconnected porous structure were obtained. Up to 6 times of water (weight/weight) was absorbed by the materials while no apparent change in volume was found suggesting that the main mechanism of water absorption was primary pore filling. Prepared materials were used for the removal of dyes methylene blue (MB) and methyl orange (MO) from their aqueous solutions; in 120 min 6.5 mg g(-1) of MB and 1.6 mg g(-1) of MO were removed.