High-performance ester-crosslinked hollow fiber membranes for natural gas separations

► Improved fiber performance by optimizing dope composition and spinning process. ► Improved CO2 permeance from 50 GPU to 117 GPU (over 130%) without skin defects. ► Achieved CO2/CH4 selectivity of 44 and CO2 permeance of 110 GPU at 22 °C. ► Crosslinked hollow fibers withstand 800 psi 50/50 CO2/CH4 without plasticization