| 초록 |
Reverse osmosis and nanofiltration membranes are susceptible to biofouling, in particular when treating municipal wastewater, and chlorine compounds are widely used to successfully control the bacteria that causing biofouling. However, the low chlorine tolerance of conventional PA membranes leads to irreversible damage to membrane performance due to chlorine attack beginning at the amide nitrogen in PA membranes. This presentation presents the synthesis and characterization of a systematic series of highly chlorine-tolerant, sulfonated copolymer membranes, for use as desalination membranes, based on chemistry that is entirely different from the conventional post-polymerization sulfonation technique. This study will discuss the preparation and evaluation of several families of sulfonated copolymers such as random or segmented multiblock copolymers in terms of fundamental desalination characteristics (e.g., water permeability (or permeance), salt permeability, and salt rejection). |
