期刊
JOURNAL OF MEMBRANE SCIENCE
卷 403, 期 -, 页码 169-178出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2012.02.041
关键词
Thermally rearranged (TR) polymer; Polybenzoxazole; Hollow fiber membrane; CO2 separation
资金
- Carbon Dioxide Reduction and Sequestration Center
- Ministry of Education, Science and Technology in Korea
- National Research Foundation (NRF) of the Korean Ministry of Science and Technology [R31-2008-000-10092-0]
- National Research Foundation of Korea [과C6A1908] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Thermally rearranged polybenzoxazole (TR-PBO) hollow fiber membranes were prepared using a nonsolvent induced phase separation method intended to apply for CO2 separation from post-combustion flue gas. Asymmetric hollow fiber membranes were spun from a hydroxyl poly(amic acid) (HPAAc) precursor and subsequently converted to TR-PBO hollow fiber membranes after thermal treatment above 400 degrees C. The skin structure and porous substructure in TR-PBO hollow fiber membranes were maintained even after thermal treatment at above glass transition temperature (T-g) of precursor polymers. To fabricate defect-free hollow fiber membranes, the effects of dope composition and thermal rearrangement conditions were investigated. Gas permeation properties of TR-PBO hollow fiber membranes measured by constant pressure method with small laboratory scale test module revealed a high CO2 permeance (1940 GPU) with a CO2/N-2 selectivity of 13. (C) 2012 Elsevier B.V. All rights reserved.
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