%0 Journal Article %T Synthesis, freestanding membrane formation, and properties of novel sulfonated hyperbranched polyimides %A Ying, Libin %A Guo, Xiaoxia %A Fang, Jianhua %J High Performance Polymers %V 30 %N 1 %P 3-15 %@ 0954-0083 %D 2018-02-01 %I SAGE Publications %~ DeepDyve