| 초록 |
We synthesized thermo-responsive polymers, a series of poly(alkane-1,#-diylbis(tributylphosphonium) 4-vinylbenzenesulfonate) (PSSBP#, # = 8, 6, and 4), where # is number of carbons in centered bridge of diphosphonium moiety, to confirm potential application as draw solute in forward osmosis (FO) process. These polymers show lower critical solution temperature (LCST) property in aqueous solution, which is an essential factor for recovering draw solute from pure water. The LCST of aqueous solutions of PSSBP8, PSSBP6, and PSSBP4 were confirmed approximately 30, 38, 26 oC at 20 wt% concentration, respectively. When concentration of PSSBP8 draw solution was 20 wt%, water flux and reverse solute flux were determined to be 1.84 LMH, and 1.12 gMH approximately in pressure retarded osmosis (PRO) mode. PSSBP# can be a next-generation draw solute due to effective recovery. Therefore, this study can give inspiration for novel ideas in development of draw solute and availability as draw solute. |
