1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic Univ., Tianjin 300387, CN.
2. State Key Laboratory of Bio-Based Fiber Manufacture Technology, China Textile Academy, Beijing 100025, CN.
3. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic Univ., Tianjin 300387, CN (Corresponding author).