Article ID Journal Published Year Pages File Type
635041 Journal of Membrane Science 2012 10 Pages PDF
Abstract

Thermally rearranged polybenzoxazole (TR-PBO) hollow fiber membranes were prepared using a non-solvent 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 °C. The skin structure and porous substructure in TR-PBO hollow fiber membranes were maintained even after thermal treatment at above glass transition temperature (Tg) 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/N2 selectivity of 13.

► Thermally rearranged (TR) polymer membranes have been prepared from precursor polymer by simple thermal treatment process. ► TR-PBO hollow fiber membranes have been prepared by non-solvent induced phase separation process (NIPS). ► TR-PBO hollow fiber membranes for CO2 separation.

Related Topics
Physical Sciences and Engineering Chemical Engineering Filtration and Separation
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