Pristine and thermally-rearranged gas separation membranes from novel o-hydroxyl-functionalized spirobifluorene-based polyimides
dc.contributor.author | Ma, Xiaohua | |
dc.contributor.author | Salinas, Octavio | |
dc.contributor.author | Litwiller, Eric | |
dc.contributor.author | Pinnau, Ingo | |
dc.date.accessioned | 2015-08-03T11:44:21Z | |
dc.date.available | 2015-08-03T11:44:21Z | |
dc.date.issued | 2014-09-22 | |
dc.identifier.citation | Ma, X., Salinas, O., Litwiller, E., & Pinnau, I. (2014). Pristine and thermally-rearranged gas separation membranes from novel o-hydroxyl-functionalized spirobifluorene-based polyimides. Polym. Chem., 5(24), 6914–6922. doi:10.1039/c4py01221f | |
dc.identifier.issn | 17599954 | |
dc.identifier.doi | 10.1039/c4py01221f | |
dc.identifier.uri | http://hdl.handle.net/10754/563261 | |
dc.description.abstract | A novel o-hydroxyl-functionalized spirobifluorene-based diamine monomer, 2,2′-dihydroxyl-9,9′-spiro-bifluorene- 3,3′-diamine (HSBF), was successfully prepared by a universal synthetic method. Two o-hydroxyl-containing polyimides, denoted as 6FDA-HSBF and SPDA-HSBF, were synthesized and characterized. The BET surface areas of 6FDA-HSBF and SPDA-HSBF are 70 and 464 m2 g-1, respectively. To date, SPDA-HSBF exhibits the highest CO2 permeability (568 Barrer) among all hydroxyl-containing polyimides. The HSBF-based polyimides exhibited higher CO2/CH4 selectivity than their spirobifluorene (SBF) analogues (42 for 6FDA-HSBF vs. 27 for 6FDA-SBF) due to an increase in their diffusivity selectivity. Polybenzoxazole (PBO) membranes obtained from HSBF-based polyimide precursors by thermal rearrangement showed enhanced permeability but at the cost of significantly decreased selectivity. | |
dc.description.sponsorship | The authors acknowledge KAUST funding for Professor Ingo Pinnau. | |
dc.publisher | Royal Society of Chemistry (RSC) | |
dc.title | Pristine and thermally-rearranged gas separation membranes from novel o-hydroxyl-functionalized spirobifluorene-based polyimides | |
dc.type | Article | |
dc.contributor.department | Advanced Membranes and Porous Materials Research Center | |
dc.contributor.department | Chemical Engineering Program | |
dc.contributor.department | Physical Science and Engineering (PSE) Division | |
dc.identifier.journal | Polym. Chem. | |
kaust.person | Ma, Xiaohua | |
kaust.person | Salinas, Octavio | |
kaust.person | Litwiller, Eric | |
kaust.person | Pinnau, Ingo |
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