期刊
POLYMER
卷 193, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2020.122369
关键词
Polymer of intrinsic microporosity; Troger's base; 1,1 '-binaphthalene-2,2 '-OH
资金
- National Natural Science Foundation of China [51703036]
- Ministry of Education of China [IRT17R80]
- Tianjin Science and Technology Planning Project [18PTZWHZ00210, 19PTSYJC0030]
- Foundation of State Key Laboratory of Coal Conversion [J19-20 -907]
- Program for Guangdong Introducing Innovative and Entrepreneurial Team [2016ZT06C412]
Two novel OH-functionalized intrinsically microporous polymers were successfully synthesized from a tert-butyldimethylsilyl (TBS) protected 1,1'-binaphthalene-diamine monomer (NH2-BINOL-TBS). Interestingly, the polymerization and the removal of the TBS to form OH group happened at the same time. Polymers with 30% (PIM-HNTB-30) and 60% (PIM-HNTB-60) OH concentration were obtained by controlling the reaction time of 3.5 and 12 h, and confirmed by nuclear magnetic resonance spectroscopy (NMR). PIM-HNTB-30 exhibited higher Brunauer-Emmett-Teller (BET) surface area (432 vs 153 m(2) g(-1)) and thermal stabilities (420 vs 385 degrees C) than PIM-HNTB-60. Both membranes showed modest gas permeabilities and selectivities, and PIM-HNTB-60 exhibited a relatively higher performance. After long-term aging or thermally annealed above glass transition temperature (T-g), both polymers exhibited a decreased permeabilities combined with a selectivity increase, and the 350 degrees C treated PIM-HNTB-60 exhibited O-2 permeability of 89 Barrer and O-2/N-2 selectivity of 4.47. In all, the OH functionalization provided a good way to enhance the gas separation performance.
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