The permeability coefficients of four different HQDEA - based polyetherimide membranes to H2, CO2.O2, N2 and CH4 have been measured at temperatures from ambient to 150C.

• 合成了四种双醚二酐(HQDEA)型聚醚酰亚胺,研究了它们对H_2、CO_2、O_2、N_2和CH_4五种气体的透过性能。