| 초록 |
Thin film composite (TFC) reverse osmosis (RO) membranes show superior separation performance for water desalination process compared to other types of membranes. However, trade-off relationship between the water permeance and the selectivity exists for the TFC RO membranes. In order to overcome this relationship and endow the membranes with other properties, many kinds of materials have been introduced to TFC membranes as additives. Among various types of additives, surfactant, especially polymeric surfactant has the advantage over monomeric surfactant that it can remain in the membranes after the interfacial polymerization, and also act as fillers, so it can change the surface properties of the RO membranes. In this study, amphiphilic cationic block copolymer was synthesized via RAFT polymerization and subsequent quaternization, and incorporated into the selective layer of TFC RO membranes. As a result, separation performance of the membranes can be improved. |
