TY - JOUR PY - 2017 J2 - J. Membr. Sci. SN - 0376-7388 T2 - Journal of Membrane Science VL - 530 DO - 10.1016/j.memsci.2017.02.030 TI - Effects of the side groups of the spirobichroman-based diamines on the chain packing and gas separation properties of the polyimides UR - https://www.cheric.org/research/tech/periodicals/view.php?seq=1537874 KW - Gas separation membrane KW - Spirobichroman-based polyimide KW - Fractional free volume KW - Polymer synthesis d-spacing AU - Zhang CL AU - Li P AU - Cao B SP - 176 EP - 184 LA - English ER -