1. Department of Polymer Science and EngineeringZhejiang University Hangzhou 310027 China
2. Hainan Litree Purifying Technology Co., Ltd. Haikou 571126 China
3. Chemical Engineering and Pilot Plant Department, Engineering Research DivisionNational Research Centre 33 El Bohouth Street (Former El Tahrir Street), Dokki, Giza 12622 Egypt
4. Center for Membrane and Film Technology, Department of Chemical Science and EngineeringKobe University Rokkodaicho 1‐1, Nada, Kobe 657‐8501 Japan