期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 304, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201800551
关键词
membrane; organic/inorganic hybrid material; organic solvent nanofiltration; polythiosemicarbazide
资金
- King Abdullah University of Science and Technology (KAUST) [BAS/1/1332-01-01]
Crosslinked polythiosemicarbazide (PTSC) membranes with a positively charged surface are fabricated via a reaction with (3-glycidyloxypropyl)trimethoxysilane. The integrally asymmetric ultrafiltration membranes discussed here can be easily prepared by water-induced phase separation using a PTSC solution in dimethylsulfoxide (DMSO). The crosslinked PTSC membranes are stable in DMSO, N,N-dimethylformamide, and tetrahydrofuran and they reject molecules of molecular weights (MW) above 1300 g mol(-1). The influence of the crosslinking agent on the surface charge, membrane solvent resistance, and membrane performance is discussed. The crosslinked asymmetric PTSC membranes totally reject Direct Red dye (MW 1373 g mol(-1)), while the pristine PTSC membrane does not show any rejection for this dye. This finding suggests that an inorganic-type-network is formed during the crosslinking reaction, which tunes the pore size of the prepared membranes.
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