Performance of 6FDA–6FpDA polyimide for propylene/propane separations
✍ Scribed by Mita Das; William J. Koros
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 520 KB
- Volume
- 365
- Category
- Article
- ISSN
- 0376-7388
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The solubility, diffusivity, and permselectivity of propylene and propane in 40 different polyimides synthesized from 2,2-bis(3,4-decarboxyphenyl)hexafluoropropane dianhydride (6FDA) were determined at 298 K. The influence of the chemical structures on the physical and gas permeation properties of t
We have found that the chemistries of inner and external coagulants, gelation bath temperature, and air gap distance have profound effects on 6FDA-polyimde hollow-fiber morphology and performance. This 6FDA-polyimide is made of 50 mol % 2,2-bis(3,4-dicarboxyphenyl) hexafluoro propane dianhydride (6F