| 抗污染PVA/PVDF电纺纳米纤维复合超滤膜的制备及过滤性能 |
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| 引用本文： | 武凌辉,汪滨,王娇娜,李从举.抗污染PVA/PVDF电纺纳米纤维复合超滤膜的制备及过滤性能[J].高等学校化学学报,2016(12):2306-2314. |
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| 作者姓名： | 武凌辉 汪滨 王娇娜 李从举 |
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| 作者单位： | 1. 北京服装学院材料科学与工程学院; 服装材料研究开发与评价北京市重点实验室，北京100029;2. 北京服装学院材料科学与工程学院; 服装材料研究开发与评价北京市重点实验室，北京100029; 中国科学院北京纳米能源与系统研究所，北京100083 |
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| 基金项目： | 国家自然科学基金(批准号21274006，51503005)，北京市科技北京百名领军人才工程(批准号 Z16111000490000)，北京市百千万人才工程(批准号110403000402)，北京市属高等学校高层次人才引进与培养计划项目-北京市长城学者培育计划项目(批准号CIT&TCD20150306)，北京市属高校创新能力提升计划项目(批准号TJSHG201310012021)，北京市教育委员会科技计划一般项目(批准号SQKM20171001-2004)，北京服装学院创新团队与优秀人才选拔与培养计划项目(批准号2014AL-68)，北京市服装材料研究开发与评价重点实验室开放课题(批准号2015ZK-02)，北京服装学院校内重点项目(批准号2016A-03)资助．? Supported by the Natural Science Foundation of China(．21274006，51503005)，the Beijing Science and Technology Leading Talent Project， China(Z16111000490000)，the Beijing Talents Project， China(110403000402)，the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions-the Beijing Great Wall Scholars Incubator Program， China(CIT&TCD20150306)，the Beijing City Board of Education Upgrade Project， China(TJSHG201310012021)，the General Program of Science and Technology Development Project of Beijing Municipal Education Commission of China(SQKM201710012004)，the Project of Construction of Innovative Teams and Selection and Development of Excellent Talents for Beijing Institute of Fashion Technology， China(2014AL-68)，the Open Project Program of Beijing Key Laboratory(2015ZK-02)，the Key Research Project of Beijing Institute of Fashion Technology， China( No．2016A-03)． |
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| 摘 要： | 以聚对苯二甲酸二醇酯(PET)无纺布为基底,聚偏氟乙烯(PVDF)纳米纤维为支撑层,聚乙烯醇(PVA)纳米纤维膜为分离层,采用静电纺丝法制备超滤膜,并用水/丙酮混合溶液对复合纳米纤维膜表面进行溶液处理,再加入戊二醛交联改性得到致密分离层.采用扫描电子显微镜(SEM)和红外光谱(FTIR)表征了复合超滤膜的表面,用水接触角(WCA)表征复合超滤膜的亲水性.在0.02 MPa恒压下死端过滤油/水乳液,测试复合超滤膜的过滤性能.结果表明,最优条件下制备的复合超滤膜死端过滤油/水乳液的通量为(42.50±4.78)L/(m~2·h),截留率达到(95.72±0.33)%;循环使用5次后,依然具有较好的过滤性能,常压下死端过滤复合超滤膜的纯水通量为(3469±28)L/(m~2·h).
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| 关 键 词： | 静电纺丝 溶液处理 超滤 抗污染 |
Preparation and Filtration Performance of Antifouling PVA/PVDF Composite Ultrafiltration Membrane Based on Electrospinning Technology |
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| Abstract: | A composite ultrafiltration membrane containning polyethylene terephthalate ( PET ) non?woven fabric substrate and poly(vinylidene fluoride)(PVDF) nanofibers as support layer, polyvinyl alcohol(PVA) nanofiber membrane for barrier layer was prepared using electrospinning method. A mixture of acetone and water solution was used for crosslinking treatment to form the dense barrier layer. The ultrafiltration membranes were characterized by Fourier transform infrared(FTIR) spectroscopy, scanning electron micrograph(SEM) and water contact angle(WCA). Filtration performance of the resulting PVA/PVDF composite ultrafiltration membranes was evaluated by the oil/water emulsions separation system. The results showed that the optimal composite ultrafiltration membrane possessed general flux(42?50±4?78) L/(m2·h)] and high rejection rate(95?72±0?33)%] at very low feeding pressure(0?02 MPa), after 5 times recycled, it still has good filter performance. The pure water flux using the dead?end filtrationof composite ultrafiltration membrane at atmospheric pressure was (3469±28) L/(m2·h)]. |
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| Keywords: | Electrospinning Solution treatment Ultrafiltration Antifouling |
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