Use of Amphiphilic polymer nanoparticles as a nano-absorbent for enhancing efficiency of micelle-enhanced ultrafiltration process

초록

A new ultrafiltration process using amphiphilic polymer nanoparticles was suggested for removal of dissolved hydrophobic pollutant from water. Amphiphilic polymer nanoparticles having micelle-like structure was synthesized using amphiphilic urethane acrylate anionomer (UAA) chains having polytetramethylene oxide-based hydrophobic segment and hydrophilic carboxylic acid group at the same backbone. UAA chain were mixed with water and formed nanoparticles dispersed at water, which was converted to crosslinked amphiphilic polyurethane (CAP) nanoparticles via soap-free emulsion polymerization process. CAP nanoparticles could solubilize phenanthrene dissolved in water and exhibit interfacial activity like surfactact do. At the same ultrafiltration condition, CAP nanoparticles showed higher rejection % compared to anionic surfactant, sodium dodecyl sulfate (SDS), Consequently, CAP nanoparticles could remove 95 % of phenanthrene from water via ultrafiltration process even at low concentration (30 - 1000 mg/L).

키워드