Hydrophilic polyethersulfone (PES) flat sheet membranes were prepared with PES,polyvinyl pyrrolidone (PVP-K90) and dimethylacetamide (DMAc) as raw materials via the nonsolvent induce phase separation technique.The effects of thermal treatment conditions on the properties of hydrophilic PES membranes were systematically investigated.The results indicated that the thermal treatment conditions significantly influenced the dissolution value of PVP.PVP dissolution value of the membrane samples decreased as increasing the temperature and processing time of thermal treatment.The treatment temperature showed little effect on the mechanical properties of the membranes.The membrane hydrophilicity gradually increased with the increase of thermal treatment time.The pure water permeance of the membranes was enhanced by thermal treatment,and the maximum value was achieved when the treatment temperature was 80℃.
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基金资助
广东省重点领域研发计划(2023A1111030001);深圳市科技计划可持续发展专项(KCXFZ20201221173402006);中科院科技服务网络计划项目(STS-HP-202205)
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