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Primary study of novel poly(acrylic sodium)/poly(ether sulfone) composite ultrafiltration membranes (I) the preparation of composite membrane |
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| Authors: | Fan Wenling Li Lei Lu Xiaofeng |
| Affiliation: | a Membrane Separation Center, Shanghai Institute of Applied Physics Research, Chinese Academy of Sciences, Shanghai 201800, China b College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029, China c Department of Chemical and Engineering, Nanjing University, Nanjing 210093, China d Department of Breast Surgery, The Second People's Hospital of Liaocheng, Linqing 252601, China |
| Abstract: | The poly(acrylic sodium) (PAS)/poly(ether sulfone) (PES) composite ultrafiltration membranes were prepared by coating PAS membrane solution on PES support membrane. The effects of substrate membrane, the composition of PAS solution such as PAS concentration, the choice of the solvent and the additive, and the thickness of PAS active layer on the performance of the composite membranes were extensively investigated. The experimental results have indicated the optimal PAS/PES composite membranes, containing a PES substrate with MWCO of 70,000, together with a PAS top layer having a thickness of about 20 μm, were tested at room temperature and under the pressure of 0.6 MPa with the mass concentration of 0.005 g/L poly(ethylene glycol) (PEG) (Mw = 1000 g/mol) solution, a flux of 32.6 L/(m2 h) and a rejection of 92.2% were obtained, which are superior to those of the common commercial membranes reported. |
| Keywords: | Polyacrylic sodium Composite ultrafiltration membranes Preparation |
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