Release Time:2019-03-11  Hits:

Indexed by: Conference Paper

Date of Publication: 2015-01-01

Included Journals: SCIE、CPCI-S

Volume: 39

Page Number: 94-98

Key Words: PIMs; Polymer membrane; Gas separation; Microporous organic materials

Abstract: Polymers of intrinsic microporosity (PIMs) possess rigid and highly non-linear molecular structures. The contortion site of PIM-1 is provided by the monomer 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI). The paper described the effect of synthetic conditions including catalyst and reaction time on the yield and purity of TTSBI. Then, PIM-1 was synthesized by TTSBI and 2,3,5,6-tetrafluorophthalonitrile in DMF at 60 degrees C for 96h. The chemical structure of TTSBI and PIM-1 was characterized by H-1 NMR and FT-IR. The gas separation properties of PIM-1 treated in different conditions were obtained. The optimized synthetic condition of TTSBI was that hydrochloric acid was chosen as catalyst to react for five hours at 105 degrees C. PIM-1 had good solubility in chloroform. The PIM-1 membranes had good gas permeability coefficients for O-2, N-2, H-2, CH4 and CO2. PIM-1 membrane treated by methanol solvent soaked or redissolved in chloroform showed outstanding gas permeability coefficient and a moderate selectivity.