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材料研究学报 1993
GAS PERMEABILITY AND PERMSELECTIVITY OF HQDEA-MDA MODIFIED BY RIGID AROMATIC DIANHYDRIDE
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Abstract:
Gas permeabilities and permselectivities for gas pairs H_2/N_2 and O_2/N_2through a series of aromatic copolyetherimides,which were prepared from four differentdianhydrides(HQDEA,PMDA,BPDA,and BTDA)and 4.4'-methylenedianiline(MDA),have been investigated a
